Rental Housing Discrimination on
the Basis of Mental Disabilities:
Results of Pilot Testing
Study of Rental Housing
Discrimination on the Basis
of Mental Disabilities:
Final Report
U.S. Department of Housing and Urban Development | Office of Policy Development and Research
RENTAL HOUSING
DISCRIMINATION ON THE BASIS
OF MENTAL DISABILITIES:
RESULTS OF PILOT TESTING
STUDY OF RENTAL HOUSING
DISCRIMINATION ON THE BASIS
OF MENTAL DISABILITIES:
FINAL REPORT
Prepared by
Joy Hammel
Janet Smith
University of Illinois at Chicago
Susan Scovill
Consultant
Ron Campbell
M. Davis and Company, Inc.
Rui Duan
HDR, Inc.
Prepared for
U.S. Department of Housing and Urban Development
Office of Policy Development and Research
Submitted by
M. Davis and Company, Inc.
August 2017
Acknowledgments
This project could not have been completed successfully
without the commitment, dedication, and hard work
of many. We particularly thank the research team and
administrative support staff at M. Davis and Company, Inc.
Thanks are also due to Madeline Hoffman for assisting with
coordination, quality control, and guidance throughout
the testing process and to May Raad of HDR, Inc., for their
analysis contributions. Finally, this study would not have
been possible without the work of our local testing organi-
zations, Access Living in Chicago (Jamie Wichman, Kelly
Chen) and The Equal Rights Center in Washington, D.C.
(Kristen Barry and Valentine Khaminwa), and our outstand-
ing group of testers—many of whom are members of the
very disability community that is the focus of this study.
A panel of expert advisers made invaluable contributions
to the authors’ understanding of the housing experiences
and challenges faced by people with mental disability,
reasonable accommodations, and protocol design and
data analysis. The panel members (and their organiza-
tional affiliations at the time of the study) were Michael
Allen, Relman, Dane & Colfax, PLLC; Anne Cameron
Caldwell, Research and Innovations Officer and Director
of the Autism NOW Resource Center, The ARC; Arlene
Kanter, Co-Director of the Syracuse University Center on
Human Policy, Law, and Disability Studies; Marti Knisely,
Community Support Initiative, the Technical Assistance
Collaborative; Katherine McDonald, Associate Professor,
Syracuse University; Tia Nelis, Self-Advocacy Specialist at
the Rehabilitation Research and Training Center, Institute
on Disability and Human Development, University of
Illinois at Chicago; Jan Peters, Executive Vice President
and Chief Operating Officer, Eden Housing Inc.; Susan
Ann Silverstein, Senior Attorney, Foundation Litigation,
AARP; Karen Tamley, Commissioner of the Mayor’s Office
for People with Disabilities, City of Chicago; Victoria
Tedder, Housing Counseling and Advocacy Program, San
Francisco Independent Living Resource Center; and Sam
Tsemberis, Pathways to Housing. Many thanks are due to
Kim Savage for her assistance in managing the expert panel.
Anne Fletcher from the U.S. Department of Housing and
Urban Development, Office of Policy Development and
Research, provided excellent guidance and oversight
throughout this research effort.
Finally, special thanks and remembrance to Bonnie Milstein,
a lifelong advocate for disability rights and social justice,
who served on the initial project team and coordinated the
expert panel.
Disclaimer
The contents of this report are the views of the contractor and do not necessarily reflect the views or policies of the U.S. Department
of Housing and Urban Development or the U.S. government.
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Contents
Executive Summary ................................................................ vi
Introduction ....................................................................vi
Summary of Findings ..................................................... vii
Recommendations ......................................................... viii
Study Overview ...................................................................... 1
Purpose and Goals of the Study ...................................... 1
Background and Previous Research on Housing
Discrimination Against People With MD .................. 1
Overview of Testing Focused on Individuals With MD .... 2
Paired Testing Protocols and Field Management ..................... 4
Overview of Testing for Housing Discrimination ............. 4
Strengths and Limitations of Paired Testing in Different
Testing Methods....................................................... 4
Overview of the Paired Testing Design and Process ......... 5
Pretesting ........................................................................ 5
E-mail Testing Protocols .................................................. 6
Telephone Testing Protocols ............................................ 9
In-Person Testing Protocols ........................................... 12
Overall Data Collection Oversight, Management, and
Quality Control...................................................... 16
Sampling Methods ................................................................ 17
Sampling Frame ............................................................ 17
Allocation of Tests Across Market Size ........................... 17
Sample of Metropolitan Areas........................................ 18
Selection of Advertised Units ........................................ 20
Risk of Detection ........................................................... 21
Sampling of Units ......................................................... 21
Analysis of Testing Findings ................................................. 23
Summary of Tests Conducted ........................................ 23
Measuring Differential Treatment .................................. 24
Data Analysis ................................................................ 27
Measuring Discrimination ............................................. 27
Findings of Incidence of Discrimination ............................... 29
Data Reliability and Limitations .................................... 29
E-mail Testing Findings ................................................. 29
Reasonable Accommodation Requests via E-mail ............ 31
Telephone Testing Findings ........................................... 32
Reasonable Accommodation Requests via Telephone ...... 34
In-Person Testing Findings ............................................ 36
Findings From the Evaluation of Different Testing Modes ..... 38
People With Disabilities As Testers: Is It Feasible? ......... 38
Tester Profile: How Do You Isolate and Reveal Disability? .. 38
E-mail Testing: Strengths and Weaknesses ..................... 40
Telephone Testing: Strengths and Weaknesses ............... 41
In-Person Testing: Strengths and Weaknesses As
Evaluated by Testers With MD and Companion
Testers ................................................................... 42
Summary, Conclusions, and Recommendations .................... 47
Project Leadership and Design ...................................... 49
Recruitment and Selection of Testers ............................. 49
Training and Data Collection ......................................... 49
Appendix A: Qualitative Analyses and Findings on Overt
and Subtle Discrimination Against People With Mental
Disabilities by Different Testing Modes ................................. 50
Qualitative Analysis Methodology ................................. 50
Data Analysis ................................................................ 51
Results .......................................................................... 53
Discussion and Conclusions .......................................... 61
Appendix B: References ........................................................ 63
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List of Tables
Table 1. Testing Timeline .................................................. 5
Table 2. Subject Lines Assigned Randomly for All
E-mail Tests ......................................................... 6
Table 3. E-mail Tester Scripts ............................................ 7
Table 4. Reasonable Accommodation Request by Type
of Disability ......................................................... 8
Table 5. Telephone Tester Scripts .................................... 10
Table 6. Examples of How MD May Affect Functional
Aspects of Life and Maintenance of Housing ..... 14
Table 7. Sampling Frame for People With MD, by Test
Type .................................................................. 17
Table 8. Rental Market Sampling Frame .......................... 17
Table 9. Allocation of Tests Across Market Size ............... 17
Table 10. Distribution of Population With Disabilities
and Proportion With Cognitive Disabilities,
2009–2011 ........................................................ 18
Table 11. Pool of Possible Markets (MSAs) Based on
Statistical Criteria for Inclusion ......................... 19
Table 12. Selected Markets by Size and Olmstead Status .... 20
Table 13. Sample Allocation Plan Across Communities
and Test Types by Market Size ........................... 20
Table 14. Criteria for Inclusion in/Exclusion From Unit
Sample .............................................................. 21
Table 15. Total Tests Conducted by Test Mode .................. 23
Table 16. E-mail Sample Allocation by Market Size .......... 23
Table 17. Telephone Testing Allocation by Market Size ..... 24
Table 18. In-Person Sample Allocation by Location .......... 24
Table 19. Differential Treatment Indicator Matrix .............. 25
Table 20. Possible Outcomes Matrix ................................. 27
Table 21. Differential Treatment in Response Received
for Renters With MD (I/DD+MI) Found in
E-mail Testing ................................................... 29
Table 22. Summary of Differential Treatment of Renters
With MD (I/DD+MI) Found in E-mail Testing ... 30
Table 23. Differential Treatment in Response Received
for Renters With MI Found in E-mail Testing .... 31
Table 24. Summary of Differential Treatment of Renters
With MI Found in E-mail Testing ...................... 31
Table 25. Summary of Reasonable Accommodation
Requests by Testers With MD Found in E-mail
Testing ............................................................... 32
Table 26. Summary of Differential Treatment of Renters
With MD Found in Telephone Testing ............... 32
Table 27. Summary of Differential Treatment of Renters
With MI Found in Telephone Testing ................ 33
Table 28. Summary of Differential Treatment of Renters
With I/DD Found in Telephone Testing ............. 33
Table 29. Summary of Reasonable Accommodation
Requests by Testers With MD Found in
Telephone Testing .............................................. 34
Table 30. Summary of Reasonable Accommodation
Request Responses by Specific Markets ............. 35
Table 31. Summary of Differential Treatment of Renters
With MD Found in In-Person Testing ................ 36
Table 32. Summary of Differential Treatment of Renters
With MI Found in In-Person Testing ................. 36
Table 33. Summary of Differential Treatment of Renters
With I/DD Found in In-Person Testing .............. 37
Table 34. Pros and Cons of E-mail Testing ........................ 41
Table 35. Pros and Cons of Telephone Testing .................. 42
Table 36. Pros and Cons of In-Person Testing ................... 46
Table A-1. Samples of Telephone and In-Person Testing ..... 51
Table A-2. Subtle Discrimination Indicator Keyword
Groups .............................................................. 52
Table A-3. Response Difference in E-mail Content .............. 53
Table A-4. Subtle Discrimination Responses in Multiple
Categories ......................................................... 53
Table A-5. Subtle Discrimination in E-mail Testing ............. 55
Table A-6. Housing Provider Responses to RA Requests in
E-mail Testing ................................................... 55
Table A-7. Open Door/Closed Door in E-mail Testing ........ 55
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Table A-8. Subtle Discrimination in Telephone Testing ....... 57
Table A-9. Overt Discrimination in Telephone Testing ........ 58
Table A-10. Housing Provider Responses to RA Requests
in Telephone Testing .......................................... 58
Table A-11. Open Door/Closed Door in Telephone Testing... 58
Table A-12. Subtle Discrimination in In-Person Testing ........ 60
Table A-13. Overt Discrimination in In-Person Testing ......... 60
Table A-14. Open Door/Closed Door in In-Person Testing ... 61
List of Figures
Figure 1. Flow of Sample Selection and Testing Process ... 22
Figure 2. Response Rate of E-mail Paired Tests ................. 23
Figure 3. Response Rates of E-mail Paired Tests for
Pro tected Testers Identifying as a Person With
MI .................................................................... 30
Figure A-1. E-mail Testing Responses ................................... 50
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Executive Summary
Introduction
More than 15 million people in the United States have some
type of mental disability (MD). Many of these individuals seek
community-based housing in the rental market. As a result of the
U.S. Supreme Court’s decision in Olmstead v. L.C., 527 U.S. 581
(1999), an increasing number of individuals with disabilities
are moving from nursing homes and other institutional and
segregated settings into community-based settings. As a result,
equality of access to the rental housing market has become
even more of a critical policy issue.
This study represents the first comprehensive examination of
discrimination in the rental housing market against people
with MD, specifically focusing on people with mental illness
(MI) and those with intellectual or developmental disability (I/
DD). The goal of the study is to increase the understanding of
the forms and prevalence of housing discrimination against this
community as its members seek market-rate rental housing.
The overall study design included a stepwise approach to
testing the feasibility of involving individuals with MI and I/DD
in discrimination testing and to obtaining data regarding their
treatment by rental housing providers. The study was initiated
with a comprehensive review of relevant literature and the
convening of multiple focus groups that included individuals
with MI and I/DD, disability and fair housing organizations,
and policymakers. As very little discrimination research to date
has actually included these target populations as participants in
the process, the focus groups were particularly informative in
identifying specific issues faced by individuals with MI and I/
DD throughout the process of seeking rental housing. Barriers
identified by the focus group process included—
• Negative and stigmatizing reactions and attitudes by
housing providers and their agents.
• Improper requests to disclose personal and disability-relat-
ed information.
• A lack of understanding about what types of reasonable
accommodations may be needed by individuals with MD.
• The denial of proper requests for reasonable accommodations.
• Steering toward specific housing, buildings, or units based
on an individual’s disability.
From focus group input, the authors learned that individuals
with MI and I/DD experience potential discrimination at
different points of time in the rental process: when initially
attempting to gain information about available units, during the
application process, and even after moving in and during their
tenure in their home.
After the literature review and focus group phases were con-
ducted, protocols for conducting discrimination testing were
designed. A matched-pair testing design was created to examine
differences in treatment by housing providers between indi-
viduals with MI and I/DD (protected testers) and individuals
without such disabilities (control testers). Paired testers were
matched on key characteristics other than disability, such as
income, race, gender, and age. The testing sought to examine
differences in testers’ treatment across three modes of contact
with housing providers: e-mail, telephone, and in person. These
modes generally represent the primary ways people, including
individuals with MI and I/DD, might seek rental housing. In
two of the modes, e-mail and telephone testing, a request for
a reasonable accommodation was also made by the protected
tester to allow for the examination of housing providers’
responses.
An initial set of exploratory tests was administered to examine
and refine testing protocols before broad-scale testing. After the
exploratory testing, broad-scale pilot testing was conducted in
multiple urban rental markets across the United States. Testing
in each mode was divided equally between the two subcatego-
ries of MD (MI and I/DD), and more than 1,000 matched-pair
tests were administered—359 by e-mail in nine rental markets,
668 by telephone in nine rental markets, and 101 in person in
two large rental markets.
This study represents the first time that individuals with MI
and I/DD have been enlisted to serve as in-person testers in
a comprehensive, multicity housing discrimination study.
As a result, this study also contributes significantly to our
knowledge about research methodologies that are accessible,
inclusive, and participatory to individuals with MI and I/DD.
Based on feedback from individuals with MI and I/DD, a testing
methodology was developed for this study in which individuals
without MI and I/DD were trained and accompanied protected
testers as companions during in-person tests. These companion
testers served three roles: first, to act as a friend and natural
support to the protected tester during the testing; second, to
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further disclose the MD of the protected tester to the housing
provider; and third, to assist in preparing detailed field notes
to document their testing experiences.
Summary of Findings
The testing conducted in this study documented significant
levels of adverse differential treatment toward individuals with
MI and I/DD when compared with individuals who did not
have MD. Pilot testing revealed that individuals with MI and I/
DD were—
• Less likely to receive a response to their inquiry (17.55 percent
of people without disabilities received a response com-
pared with 9.19 percent of people with MI and I/DD in
e-mail testing).
• Less likely to be told an advertised unit was available (5.94
percent of people without disabilities were told that the
advertised unit was available compared with 0.99 percent
of people with MI and I/DD in in-person testing).
• Less likely to be invited to contact the housing provider (7.69
percent of people without disabilities were invited to
contact the housing provider to see the unit compared
with 0.00 percent of people with MI and I/DD in e-mail
testing).
• Less likely to be invited to inspect the available unit (21.26
percent of people without disabilities were invited to
inspect the unit compared with 16.47 percent of people
with MI and I/DD in telephone testing).
• More likely to be encouraged to look at a different unit than the
one advertised in telephone testing, a potential indicator
of steering people with MI and I/DD toward specific
buildings or areas within rental complexes, resulting in
segregated living patterns.
• Treated adversely at disparate rates depending on disability
type, with higher rates of adverse treatment found for
individuals with MI than for individuals with I/DD. This
finding may indicate that individuals with MI face more
negative stereotypes and stigma from rental housing
providers.
In both e-mail and telephone testing, a significant percentage
of individuals with MI and I/DD also experienced adverse treat-
ment with respect to a request for a reasonable accommodation.
The reasonable accommodations requested were identified as
specific to the protected tester’s functional needs, such as the
use of an assistance animal to manage emotional and cognitive
issues or the need for a verbal reminder from the landlord to
pay the rent on time.
• The willingness of a housing provider to grant a request for an
accommodation varied by mode of testing, with the rate of
granting a request for a reasonable accommodation being
significantly higher when the request was made by telephone
(59.14 percent willing to accommodate; 40.86 percent not
willing to accommodate) than by e-mail (15.38 percent
willing to accommodate; 84.62 percent not willing to
accommodate).
1
• Regardless of testing mode, a significant percentage of people
with MI and I/DD were given a negative response to their
reasonable accommodation request, ranging from outright
denials to more subtle barriers, such as an indication that
the individual with MD would be responsible for actively
seeking out and appealing the denial of his or her request
with higher-level managers whose name and contact
information were then not provided.
2
The research also found that many housing providers simply
did not respond to housing inquiries but that the probability
of a response increased based on the interpersonal nature of
the interaction. For example, in-person inquiries received the
highest rates of response, followed by telephone inquiries, with
e-mail inquiries the most likely to be ignored.
Each of the three testing modes used (e-mail, telephone, and
in person) yielded a different form of testing data that, when
viewed together, not only produced evidence of discrimination
but also showed promise for bringing testing to a national scale
and provided insights on opportunities for future testing.
Finally, this study yielded significant findings on how to con-
duct testing with testers with MD. In-person testing specifically
involving a person with MD demonstrated that people with MI
and I/DD can serve as effective testers.
3
The evidence from the
1
In-person testing protocols did not include a request by the protected tester for a reasonable accommodation.
2
In addition, testing results varied by metropolitan statistical area (MSA), with the rate of granting a reasonable accommodation request being lowest in the Chicago-
Joliet-Naperville, IL-IN-WI MSA (38.6 percent), and highest in the Albuquerque, NM MSA (75.5 percent).
3
Contributing to these outcomes were training and support provided to the testers, the use of a companion tester, and the overall coordination of the testing by
community-based disability rights organizations.
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in-person testing suggests strongly that both populations could
also do telephone testing if the same approach to training and
debriefing is used.
Recommendations
These findings led the authors to make the following recom-
mendations.
• A broad-based education initiative should be created to
educate housing providers, including owners and their
agents, about fair housing rights and obligations, includ-
ing appropriate policies and practices when dealing with
individuals with MI, I/DD, and other MD.
• Public and private housing, disability, and civil rights
organizations should redouble efforts to engage and educate
the community of people with MI and I/DD about their rights
under federal, state, and local antidiscrimination laws, how
to recognize potential discrimination, and what actions to
take when faced with discrimination.
• Additional research is necessary to better understand the
scope and severity of the discriminatory barriers encountered
by individuals with MI and I/DD as they seek, obtain, and
retain accessible rental housing. Findings from this pilot
study effort suggest that a national testing effort would be
feasible.
• Individuals with MI and I/DD can and should be an integral
part of future housing research and testing, housing dis-
crimination education initiatives, and efforts to strengthen
housing policy to promote equal housing opportunity.
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Study Overview
Purpose and Goals of the Study
The existing research related to housing discrimination and its
effect on individuals with mental disability (MD)
4
is particular-
ly limited; therefore, HUD launched this study with the goal of
increasing the understanding of the experiences of individuals
with MD as they seek rental housing.
The following research objectives identified by HUD guided
this study.
• Develop and implement different testing methods and
approaches, evaluating their strengths and weaknesses, to
establish a series of protocols for conducting paired testing
to determine and measure the degree to which people
with MD experience discrimination in the search for rental
housing.
• Conduct pilot testing using different testing procedures to
develop protocols for generating reliable estimates of any
difference in the treatment of people with MD during the
process of searching for rental housing.
• Produce a qualitative and quantitative analysis of Title VIII
Automated Paperless Office Tracking System (TEAPOTS)
data.
5
• Produce five short papers that expand the understanding
in the field of housing discrimination on the basis of MD.
6
The purpose of this study was not to generate national
estimates of housing discrimination on the basis of MD, but
rather to pilot methods for conducting paired testing with this
protected class with the goal of demonstrating a potentially
feasible approach to future nationwide testing.
Additional short papers have been developed to inform
researchers, practitioners, and consumers about the shape
and scope of housing discrimination against people with MD.
These papers focus on the following related topics.
• Short Paper 1: Systematic Literature Review of Research
on Discrimination in Rental Housing on the Basis of Mental
Disabilities.
• Short Paper 2: Getting Into and Maintaining Housing in the
Private Rental Market: Experiences of People With Mental
Disabilities.
• Short Paper 3: The Potential for Discrimination in Rental
Housing for People With Mental Disabilities Moving Out of
Institutions to Community Living Under Olmstead.
• Short Paper 4: Accessible & Participatory Methods for
Involving People With Mental Disabilities in Housing Discrimi-
nation Testing.
• Short Paper 5: Rental Housing Access & Discrimination
Experienced by People With Multiple Disabilities.
Background and Previous Research
on Housing Discrimination Against
People With MD
The federal Fair Housing Act (FHA)
7
prohibits discrimination
in the sale, rental, and financing of housing and in other
housing-related transactions, on the basis of seven protected
classes: race, color, religion, national origin, sex, familial status,
and disability. Housing providers are prohibited from consid-
ering these protected characteristics as the basis for rejecting
or refusing to negotiate with individuals seeking housing or
housing-related services and from misrepresenting or limiting
housing opportunities based on any protected characteristic.
In addition to having the basic prohibitions of the FHA against
housing discrimination for all protected classes, people with
disabilities have three additional protections under the FHA:
(1) multifamily housing with four or more units, built for
first occupancy after March 13, 1991, must meet specific, if
4
Mental disability is defined as “(1) having a mental or psychological disorder or condition that limits a major life activity, including working; (2) any other mental
or psychological disorder or condition that requires special education or related services; (3) having a record or history of a mental or psychological disorder or
condition which is known to the employer or other entity covered by this part; or (4) being regarded or treated by the employer as having, or having had, any mental
condition that makes achievement of a major life activity difficult” (Foster v. City of Oakland, 2009 U.S. Dist. LEXIS 70094).
5
TEAPOTS provides data records regarding filed discrimination complaints. The analysis of TEAPOTS data on housing complaints based on MD is documented in a
separate report.
6
These papers have been published by HUD separately.
7
Title VIII of the Civil Rights Act of 1968 as amended in 1988, 24 U.S.C. §§ 3601, et seq.
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relatively modest, accessibility requirements that allow for a
person with disabilities to access and use both the housing
units and associated public use and common use areas; (2)
housing providers must make reasonable accommodations
to their rules, policies, practices, and services necessary for
people with disabilities to equally enjoy the property; and
(3) housing providers must allow residents with disabilities,
at the residents’ expense, to make reasonable modifications
to physical structures necessary in order for them to use and
enjoy the property.
In addition, in 1999, the United States Supreme Court ruled in
Olmstead v. L.C., 527 U.S. 581, that unjustified segregation of
people with disabilities constitutes discrimination in violation
of Title II of the Americans with Disabilities Act.
8
Although the
beneficiaries of this ruling are all people with disabilities, the
decision has had a particularly significant effect on individuals
with MD living in restrictive and segregated settings, including
nursing homes and institutions. As states seek to comply with
the Olmstead ruling, people with MD are moving out of insti-
tutional settings in larger numbers and increasingly seeking
housing in the private rental market.
Individuals with MD often face multiple challenges when they
seek housing in the rental housing market. Challenges may
include both economic barriers and stigma or suspicion on
the part of housing providers that limits their access to diverse
housing choices. Complaints based on disability make up the
largest number of housing discrimination complaints filed with
federal, state, and local fair housing agencies and with private
fair housing groups (HUD, 2014a). In 2014, disability com-
plaints made up 51.84 percent, or 14,271 of the total number
of 27,528 fair housing complaints filed with HUD, its partner
state and local agencies, and private fair housing enforcement
organizations (NFHA, 2015).
9
A significant portion of these
complaints involves people with MD. For example, HUD (n.d.,
Table 1) noted that, in fiscal year 2010, fully 40 percent of the
disability complaints involved MD, which includes people with
psychiatric disability or mental illness (PD/MI) and intellectual
or developmental disability (I/DD).
In the United States, the term “mental disability” includes
a wide range of conditions. According to the U.S. Census
Bureau’s Survey of Income and Program Participation, about
6.3 percent of the U.S. population in 2010, approximately 15.2
million people age 15 or older, had difficulty with cognitive,
mental, or emotional functioning (Brault, 2012). This number
includes people with both PD and I/DD. Using a broader defini-
tion and different methodology, however, the Substance Abuse
and Mental Health Services Administration (SAMHSA) estimates
a much larger number of people who have experienced some
form of PD in a year: 44.5 million adults age 18 or older.
10
This
total comprises nearly 20 percent of the adult U.S. population.
Of this total, about 10.4 million adults (4.6 percent) of U.S.
population have severe MI (APA, 2000). Braddock et al. (2011)
used a figure of 4.8 million for the population with I/DD.
Little is known about the forms of discrimination people with
MD experience when searching for housing. According to
NCD (2001), people with any disability are likely to encounter
discrimination in three ways: (1) the housing is inaccessible, (2)
the landlord assumes that renters with disabilities are unable to
live independently, and/or (3) the housing staff are unwilling to
modify rules and policies that exclude people with disabilities.
For people with MD, access to housing also may be affected by
histories of homelessness or incarceration, both of which can be
potential sources of additional discrimination.
Overview of Testing Focused on
Individuals With MD
Although fair housing testing related to the barriers faced by the
disability community has been conducted in some metropolitan
areas, research on housing discrimination against people
with MD is particularly limited. Before this study, the most
significant examination of the level and nature of this type of
disability discrimination was published in a 2005 HUD Disabil-
ity Discrimination Study report (DDS 2005; HUD, 2005).
DDS 2005 explored the development of methodologies in
testing for housing discrimination on the basis of MD using a
paired testing methodology previously used in testing for hous-
ing discrimination on the basis of race and ethnicity. DDS 2005
employed a handful of in-person tests by individuals with MD
and telephone tests by testers without disabilities purportedly
calling on behalf of individuals with MD.
8
The Americans with Disabilities Act of 1990, 42 U.S.C. §§ 12101, et seq.
9
This percentage is an increase from 49.51 percent of all complaints submitted in 2013.
10
SAMHSA defines mental illness as the presence of mental, behavioral, or emotional disorder based on the diagnostic criteria in APA (2000).
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Key findings of DDS 2005 exploratory testing included—
• It is feasible to conduct in-person testing, and people with
MD can effectively serve as testers.
• It is challenging to recruit people with MD who can
handle the role of a tester, and some individuals may need
extra support and assistance.
• Tests in which the person with MD was accompanied by
a “friend” without MD proved to be credible and effective
but significantly raised the cost of testing.
• Testers with MD may be more effective if they conduct
tests relatively infrequently, and it would be preferable to
extend the testing over a relatively long period of time,
unless a large pool of testers with MD could be recruited.
The pilot testing documented in this report sought to build on
the key findings observed in DDS 2005.
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Paired Testing Protocols and Field Management
Overview of Testing for Housing
Discrimination
Testing is an investigative technique that serves as a powerful
tool for directly observing differences in treatment in the
practices of housing providers and their agents. Testers pose
as individuals seeking housing, contacting housing providers
in a variety of ways to inquire about housing opportunities.
The origins of paired testing as a method of studying housing
discrimination and identifying differential treatment lie in fair
housing enforcement, in which testing is often used to identify
individual housing providers who are violating housing
discrimination laws.
11
When paired testing is applied to large,
representative samples and implemented with rigorous con-
trols using a quasi-experimental research design, it can provide
reliable estimates of the differences in treatment among
different populations and of the prevalence of discriminatory
behavior toward different protected classes. Paired testing also
can be used to identify discrimination by a specific provider
that violates the FHA.
HUD has used testing as an investigative and research tool
for more than 40 years to identify and document discrimi-
natory housing practices.
12
HUD has funded a wide variety
of testing-based initiatives, including four national studies
using the methodology of matched-pair testing to measure the
levels of housing discrimination based on race and ethnicity,
and HUD has also funded national studies on discrimination
against same-sex couples, families with children, people who
are deaf, and people who use wheelchairs.
13
For people with
disabilities, testing can be used to identify instances of direct
discrimination, to obtain evidence of unequal treatment, and
to determine whether reasonable modifications or accommoda-
tions are permitted to enable a person with a disability to fully
enjoy living in the housing.
Strengths and Limitations of Paired
Testing in Different Testing Methods
Testing can be conducted in a variety of configurations,
depending on the issues being examined, but the most common
and effective approach to observing differences in treatment
based on a particular characteristic is matched-pair testing.
In this type of testing, two testers are assigned profiles that
make them similarly situated and qualified for the housing
being tested, differing only in their membership in a protected
class. The testers contact a housing provider and inquire
about available housing. Matched-pair testing allows for the
observation of housing providers’ actions and statements and
measures whether and how people are treated differently
during the housing search process. The tester exhibiting the
characteristic being tested (for example, a disability) is referred
to as the protected tester and the tester without the characteristic
in the pair is the control tester. The key to testing is to ensure
pairs are well matched on all variables except the one variable
or characteristic to be tested—this procedure ensures that
test results are unambiguous. The matched characteristics of
the tester pairs in this study included race, gender, age range,
education, employment, household size, and income. The
single variable that differed between matched testers was the
existence or absence of a particular MD.
14
To minimize the risk
of detection by housing providers during testing, some of the
characteristics assigned to a test pair were slightly enhanced to
favor the protected tester.
11
HUD has noted that: “Fair housing advocates have turned to testing as the most effective tool to investigate violations of fair housing law” (HUD, 2014b).
12
Testing cannot capture all forms of housing discrimination. It is most effective at the early stages of the search for housing, including contacting providers to
inquire about housing opportunities and visiting properties to view units and obtain information about the rental (or sales, lending, and insurance) process and
associated costs. Testers generally have fictitious profiles, and testing rarely proceeds through the actual application stage. Testing also does not effectively capture
issues found later in the housing process, such as decisions made based on submitted applications or how residents in a protected class are treated after they move
in, such as maintenance or lease termination.
13
See HUD (2013a) and HUD (2015).
14
Because of the need to isolate the single variable of MD (either MI or I/DD) and the need to ensure that the profiles made the testers financially qualified for the
housing, the testing protocols could not reflect the real life experience of many people with MD searching for rental housing, whose lives and characteristics are
much more complex than the rigors of research testing would allow.
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Overview of the Paired Testing Design
and Process
This study included testing components in nine selected rental
markets using matched-pair testing via e-mail, telephone, and
in-person visits.
15
The overall goals were to (1) enhance the
understanding of the barriers faced by individuals with MD
in their search for rental housing, (2) determine the type and
nature of discrimination that might be encountered, (3) eval-
uate the utility of different approaches to paired testing when
conducting research on housing discrimination on the basis
of MD, and (4) assess the feasibility of employing individuals
with MD as testers. The testing in this study was not designed
to produce a national estimate of rental discrimination, but
rather was designed to develop and evaluate the utility of
different testing approaches and techniques for measuring
housing discrimination among this particular protected class.
As shown in Table 1, the testing for this study took place over
a 1 1/2-year period in 2013 and 2014. The timeframes for
each mode of testing were staggered, with each new testing
mode beginning with pretesting to confirm the effectiveness
of that mode and to assess the need for any methodological
adjustments. The testing protocols in this study built on the
protocols established in previous studies; the e-mail testing
protocols mirrored those used in a national e-mail testing
study of same-sex couples, and the telephone testing and
in-person testing protocols mirrored those established in the
DDS 2005 study, which conducted a small number of explor-
atory telephone and in-person tests based on MD employing
some individuals with MD as protected testers.
The e-mail and telephone testing in this study was conducted
from a central location in Philadelphia, Pennsylvania. The
in-person testing was performed by local testing organizations
in two markets: Access Living in the Chicago-Joliet-Naperville,
IL-IN-WI Metropolitan Statistical Area (MSA; hereafter, Chi-
cago) and The Equal Rights Center in the Washington-Arling-
ton-Alexandria, DC-VA-MD-WV MSA (hereafter, Washington,
D.C.). These testing organizations recruited, trained, and
managed the in-person testing in the field with support and
supervision from the study team.
Pretesting
Before beginning the pilot testing, pretests were conducted for
each testing mode (e-mail, telephone, and in-person testing).
The purpose of the pretesting was to ensure that (1) data
collection protocols and strategies were designed correctly;
(2) testers were trained to execute the tests appropriately; (3)
administrative procedures were effective; (4) the data entry,
coding, and interpretation process accurately captured the
experiences of testers; and (5) feedback was produced quickly,
without detection, so as to permit adjustments in the testing
protocols.
Table 1. Testing Timeline
2013 2014
3rd Q 4th Q 1st Q 2nd Q 3rd Q 4th Q
Testing
E-mail
Pretest
Pilot testing
Washington, D.C.
a
/Chicago
b
Remaining markets/RA request
Telephone
Pretest
Pilot testing Washington, D.C.
a
/Chicago
b
Pilot testing remaining markets
In person
Pretest
Pilot testing
RA = reasonable accommodation.
a
Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area.
b
Chicago-Joliet-Naperville, IL-IN-WI Metropolitan Statistical Area.
15
The rental markets tested were in the following metropolitan statistical areas (MSAs): the Albuquerque, NM; Chicago-Joliet-Naperville, IL-IN-WI; Cincinnati-
Middletown, OH-KY-IN; Fresno, CA; Harrisburg-Carlisle, PA; Nashville-Davidson--Murfreesboro--Franklin, TN; New Haven-Milford, CT; Syracuse, NY; and
Washington-Arlington-Alexandria, DC-VA-MD-WV MSAs.
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Focus group input and a review of relevant literature provided
information about how people with MD engage in the housing
search process and identified unique factors affecting their
housing search. Information from national and local disability
groups in Washington, D.C., and Chicago helped to identify
the different sources used to locate housing units available for
rent. These organizations also assisted in providing testers with
consistent, realistic, and believable identities and backgrounds.
Inperson testers with MD portrayed their own disability and
additional characteristics consistent with the tester profile
provided by the study team.
Testing protocols were designed so as to create identities that
clearly disclosed the protected tester’s MD by incorporating
supporting information such as previous hospitalization or
institutionalization and affiliation with relevant community
support agencies to ensure that the presence of MD was
unambiguously communicated to the housing provider. This
background information was also used to provide testers with
ready answers to the typical types of questions asked by rental
agents, such as, “Why are you looking at this property?” and
“Where do you work?”
E-mail Testing Protocols
The e-mail testing did not use individuals serving as testers
in the traditional sense. Replicating the protocols of HUD
(2013a), the de facto “tester” was the text of each paired e-mail
and not the individual sending the e-mails. Test administrators
sent out all e-mails inquiring about advertised rental units and
then reviewed and coded the responses. The text of the paired
e-mails contained similar language asking about the housing
unit for rent. The only difference between the two e-mails was
that one e-mail stated the person making the inquiry had MD
(either MI or I/DD). A total of 359 paired e-mail tests were ad-
ministered, including 78 paired e-mail tests that incorporated
a request for a reasonable accommodation in the e-mail of the
protected tester.
E-mail Testing Script
A benefit of using e-mail for testing is that the message is
completely controlled and consistent for the protected tester
and the control tester in the pair. Moreover, an e-mail response
from a housing provider gives verbatim statements to code and
analyze in relation to the initial e-mail inquiry. For each e-mail
test, the subject line (see Table 2) and the message were short
and relatively neutral in tone, with standard information being
requested.
Table 2. Subject Lines Assigned Randomly for All
E-mail Tests
1. One bedroom apartment
2. Apartment for rent
3. Unit for rent
4. Craigslist - 1br apartment
5. Craigslist Rental
6. Unit availability
7. Apartment posted on craigslist
8. Craigslist apartment posting
9. Inquiry about your apartment
10. Saw your Craigslist Apartment ad
11. In response to your Craigslist listing
A variety of e-mail “scripts” were developed to serve as the
body of the message (see Table 3). In the body of the text, the
protected tester discloses disability early in the text in one of
the following direct manners.
MI—“I have a mental health issue.”
I/DD—“I have a developmental disability.”
Control—none.
The e-mail text also contained a secondary reveal by the
protected tester, with a parallel addition by control testers,
referring to their previous residence.
MI—psychiatric hospital (“I have been living in a psychiatric
center for the past year”).
I/DD—group home (“I have been living in a group home for
the past year”).
Control—dorm, parents, divorce (“I have been living with my
parents, or just finished school and was living in a dorm, or just
got divorced”).
The “dual disclosure” text samples in table 3 include reveal of
the disability plus the alternate living scenarios, which provided
a sufficient number of options and ensured that the text sam-
ples were comparable.
Including both a statement about having a disability and a
type of previous living arrangement was designed to provide
clear and unambiguous evidence to a housing provider that
the prospective tenant had MD. Disclosing the current housing
situation of the protected tester is important because it not
only signals that the person has a disability (a requirement for
that living situation), but it also signals that the applicant does
not have experience living in the private market, which can
make the individual appear to be more of a risk to the housing
provider. This same justification applies to the disclosure of the
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Table 3. E-mail Tester Scripts
Protected Tester Control Tester
Hello. I am interested in your 1 br. Apt. on <specify address>. Is it
available? Is there a time I could come by and see it? I have a <disability
identifier> and have been living in <alternate housing identifier> and am
ready to get my own apartment. Thank you. <name>
Hi, my name is <name>, and I am very interested in your 1br apt
located at <specify address>. I have been living in <alternate housing
identifier>. Could you let me know if it is still available and when a
convenient time to view it would be? Thank you. <name>
Hello. Your apartment (<specify location>) seems to be what I had in
mind. Is it still available? I’d like to come by and view the apartment;
could you contact me with an available time to do so? I have a <disability
identifier> and I’ve been living in <alternate housing identifier> but I want
to get my own apartment now. Thanks, <name>
Hello. I saw your 1 br apt ad on CL at <specify address>. My name
is <name> and I am looking for a place that matches this description.
I’ve been living in <alternate housing identifier> and I’m ready to get
my own apartment. Is it available and, if so, can I see the unit? Thanks,
<name>
Hello, I am writing in response to your listing for the 1 bedroom
apartment located at <specify address>. Is it available? May I come and
see it? I’ve been living in <alternate housing identifier> because I have a
<disability identifier> and I’m ready to get my own apartment. Thank you
for your time, <name>.
I saw your ad for a 1Br apartment on Craigslist located at <specify
location>. Is this apartment still available? I would like to set a time to
see it. Can you tell me what hours you would be available so we can
schedule a visit? I’m looking forward to getting my own apt. I have
been living in <alternate housing identifier>. I can be reached at this
return email. Thanks, <name>
I saw your ad for a 1Br apartment on Craigslist located at <specify loca-
tion>. Is this apartment still available? I would like to set a time to see it.
Can you tell me what hours you would be available so we can schedule
a visit? I’m looking forward to getting my own apt. I have been living in
<alternate housing identifier> due to my <disability identifier>. I can be
reached at this return email. Thanks, <name>
Hello, I am writing in response to your listing for the 1 bedroom
apartment located at <specify address>. Is it available? May I come
and see it? Let me know when would be a good time to come by. I’ve
been living in <alternate housing identifier> and I’m ready to get my
own apartment. Thank you for your time, <name>.
Hello. I saw your 1 br apt ad on CL at <specify address>. My name is
<name> and I have a <disability identifier>. I am looking for a place that
matches this description. I’ve been living in <alternate housing identifier>
because I have a <disability identifier> and I’m ready to get my own
apartment. Is it available and, if so, can I see the unit? Thanks, <name>
Hello. Your apartment (<specify location>) seems to be what I had in
mind. Is it still available? I’d like to come by and view the apartment;
could you contact me with an available time to do so? I have been
living in <alternate housing identifier> but I want to get my own apart-
ment now. Thanks, <name>
Hello, I would like set up a time to see the place you advertised on
<specify the address>. I was wondering, is this apartment still available?
Also, is there any particular time that works best for a showing? I have
a <disability identifier> and have been living in <alternate housing iden-
tifier>. Please contact me for your most convenient time to view it. Best
regards, <name>
Hi, I am writing in response to your listing for the 1 bedroom apartment
located at <specify address>. Is it available? May I come and see it?
I’ve been living in <alternate housing identifier> and I’m ready to get
my own apartment. Thank you for your time, <name>.
current housing situation of the control tester, which is neces-
sary for parity. The inclusion of phrases such as “I’m ready to
get my own apartment” and “I’m excited about my own place”
provides counterbalancing information that mirrors the profile
of the protected tester and raises a similar first apartment
concern for a housing provider.
In 78 of the paired e-mail tests, the protected tester included a
request for a reasonable accommodation. Table 4 summarizes
the different reasonable accommodation requests used in those
additional tests. A request to have an assistance animal live
at the test property was included because it is an increasingly
common request by people with MD, particularly for people
with some forms of MD, and is also becoming a common
source of fair housing complaints filed.
16
The use of a request for a reminder of rent being due was an
accommodation recommended by the study’s expert panel. It
reflects a common housing-related concern for people with MD,
especially because it may help a tenant keep his or her apart-
ment. Before this study, little was known about how housing
providers would actually respond to this type of request, which
requires the housing provider to be actively engaged with the
tenant on a regular basis.
16
HUD uses the term “assistance animals,” which includes emotional support animals. According to HUD’s notice on Service Animals and Assistance Animals for
People with Disabilities in Housing and HUD-Funded Programs, an assistance animal “is an animal that works, provides assistance, or performs tasks for the benefit
of a person with a disability, or provides emotional support that alleviates one or more identified symptoms or effects of a person’s disability” (HUD 2013b: 2).
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Table 4. Reasonable Accommodation Request by Type of Disability
MI I/DD
1. I have a support animal, a cat, which helps me cope with my chronic
pain. Will that be okay?
I do have some trouble remembering things and I’d like to know if you
can call me with a reminder that my rent is due a couple of days before
it’s due. Could you do that?
2. I have a companion dog named Bob. He makes it possible for me
to go outside. He will need a grassy area by the apartment. Is there
someplace he can use?
Could you call me with a reminder that my rent is due a few days
before? Sometimes I have trouble remembering things and staying
organized.
3. I have a therapeutic cat to help me deal with my illness. I want to
make sure that’s ok with you.
I can’t always remember things. Could you come by or call me to
remind me that my rent is due?
4. I have some memory problems. Could you call me with a reminder
that my rent is due a couple of days before it’s due?
My dog is my support animal and I want to make sure she can stay
with me in this apartment.
5. I will need a reminder that my rent is due a couple of days before.
Could you call or come by to remind me?
My dog provides emotional support for me and it’s important that I can
keep her in this apartment. Will that be okay?
6. I sometimes have trouble staying organized and remembering. Could
you call or come by to remind me that the rent is due in a couple of
days?
I have a cat as an emotional support and companion animal. I want to
be sure it’s ok with you for me to keep her.
I/DD = intellectual or developmental disability. MI = mental illness.
Training for E-mail Testing
In January 2014, project training was conducted for e-mail test
administrators. All e-mail test administrators were rigorously
trained to ensure a common understanding of the project’s
overall purpose, quality assurance responsibilities, and terms
and definitions. Training topics included an introduction to
the project, an overview of fair housing and discrimination
testing, e-mail testing procedures, and a review of testing
forms. Special emphasis was placed on the fact that test
administrators were to be objective collectors of information.
The confidential nature of all study and testing information
was also emphasized with all study participants. This training
conformed to standard survey research guidelines and replicat-
ed those from HUD (2013a).
E-mail test administrators also received technical training
for e-mail generation and coding of e-mail responses. This
training was critical to ensure team members’ understanding
of specific coding guidelines and requirements and ensure
consistency and efficiency during the testing process. For the
coding component of the e-mail testing, the training approach
involved learning a process that could be effectively and
consistently replicated across multiple test administrators. The
same e-mail response was initially coded by the whole team.
Any differences were discussed and resolved. As this coding
was critical to the success of the project, this process continued
for several days until test administrators were uniform in their
coding of test e-mail responses.
Conducting the E-mail Testing and Quality
Control
Sampling of the advertised rental units within markets used
both automated and manual methods. An automated data-min-
ing tool (the “scraper tool”) was used to select and collect data
from advertisements on craigslist in each study market. In
addition to automated sampling, local newspapers and other
materials featuring rental housing advertisements in the selected
markets were sampled manually, with every seventh post select-
ed. All ads were filtered using the preselected criteria including
size of the unit, rental amount, and e-mail address. Ads that did
not provide the necessary information, and those describing
units set aside for low-income residents, seniors, or people with
disabilities, were excluded from the sample. A more detailed
description of the process for selecting advertised units for the
overall study is provided in the Sampling Methods section.
After rental advertisements from each market were collected,
postings from each rental market were placed in a database,
and matched-pair e-mail testing commenced. During the data
collection period (April through August 2014), rental advertise-
ments were randomly assigned to matched pairs of e-mails from
a person with MD and a person without MD.
Quality control (QC) was intrinsic to every level of the e-mail
testing process. The procedures described in this section were
used in identifying housing units and providers to be tested,
in executing the tests, and in collecting test data to minimize
the risk of detection by housing providers who might become
involved in more than one mode of testing.
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The scraper tool provided samples from internet-advertised
rental units for the e-mail tests. QC mechanisms were em-
bedded in the scraper tool to remove duplicates, and the test
administrator was responsible for providing a final QC review
of the pooled rental advertisements generated by the scraper.
The test coordinator reviewed randomly selected entries and
noted any exceptions to the protocols, which were logged in
an exception file so the same decision rules could be applied to
subsequent exceptions. For example, if the scraper tool picked
up an apartment listing that was actually part of a single-family
home, this listing was removed from the sample and logged so
that the same protocol would be followed for all future instances.
For each e-mail test, the e-mail text, subject lines, and tester
names were designed to appear as natural housing inquiries.
The tests were also matched at the semantic level, so that
level of interest, length of e-mail text, and word choice were
all similar. Thus, in all aspects, except for the disability of the
hypothetical individual who sent the housing inquiry e-mail,
the paired e-mail tests were matched.
The order of which e-mail was sent first, either the control or
protected tester’s e-mail, was randomized to address the poten-
tial effect on the test outcome of the order in which the inquiry
was received by the housing provider. The counterbalance
device used was a Microsoft Access table, which was created
to randomly select the order in which the control or protected
e-mails were sent. Microsoft Access forms were used to schedule
and generate the outgoing e-mails, ensuring consistency in
timing of outgoing e-mails. Both parts of each pair of e-mails
were sent to the selected housing provider within a 2-hour
window. All outgoing e-mails were saved to a computer server
and linked to the Access database so that accuracy could be
confirmed.
Test administrators used a sample generation form to compose
e-mails. The scraper tool filled in most of the required fields
of the form. Required fields were checked for accuracy by the
test administrator, and any fields found to be missing were
completed based on the original advertisement. All the samples
for e-mail testing were created within 48 hours of the posting
of the advertisement. After e-mails were generated based on
the sample generation form, test administrators confirmed that
the e-mail addresses were correct, the e-mail subject lines and
text were different between the e-mails, the e-mail addresses and
sender names matched, and the “when to send” fields were logical.
The ordering of paired tests was randomly assigned, and both
e-mails within a given pair were sent within 2 hours by an
automatic scheduler. The test coordinator tracked outgoing
inquiries from, and incoming responses to, the test e-mail
accounts daily, and the tracking lists were compared against—
• The number of outgoing and incoming e-mails saved to the
server.
• The number of e-mails coded for each entry in the
tester-level table.
• Access-generated e-mail contents for randomly selected
entries.
Only one inquiry was sent to each advertised property, and
there was no followup if a housing provider did not respond to
an e-mail. Tests remained open throughout the entire testing
period, although most responses (90.1 percent) occurred within
2 days of the original e-mail. If a response from the advertised
property was received, testers did not send a return e-mail. For
cases in which a test e-mail received multiple responses from
the same advertised property, all were coded in the Access database.
The Microsoft Access program used for coding input was
custom designed to ensure complete, accurate, and high-quality
data. For example, acceptable ranges for responses were pre-
programmed to help prevent data entry error. In addition, the
possibility of incomplete or missing data was prevented by not
allowing a coder to proceed to the next field or screen until all
fields were complete. During the actual testing phase, data were
examined daily and validation was performed on 20 percent
of each test administrator’s work using double-entry coding to
respondents’ e-mails to verify responses before inclusion in the
final datasheet and before being signed off by the test coordi-
nator. All tests underwent rigorous review by the study team to
help ensure high quality, consistency, completeness, accuracy,
clarity, and usability.
Telephone Testing Protocols
As in the MD exploratory testing of DDS 2005, the telephone
tests in this study were conducted by people without MD pur-
portedly calling on behalf of someone with MD. Given the large
number of telephone tests to be conducted over a relatively
short period of time and the challenges of recruiting, training,
and supporting testers with MD noted in DDS 2005, practical
considerations and concern for the burden on the testers with
MD led to the decision to use proxy testers who did not have
MD for the telephone testing in this study. Therefore, the
telephone testing process involved the recruitment and training
of people without disabilities to serve either as the control tester
or as the protected tester in the role of a proxy calling on behalf
of a relative or friend with MI or I/DD.
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After the pretesting, it was determined that the telephone test-
ing would also include a request for a reasonable accommoda-
tion related to the stated disability on behalf of the person with
MD. The two reasonable accommodation requests used were
either (1) a request that the housing provider give the tenant
a reminder to pay rent or (2) a request that the tenant be
allowed to have an assistance animal in the unit.
17
One of the
two accommodation requests was made for each MI or I/DD
telephone test. One-half of the testers for each group requested
one of the two accommodations. Reasonable accommodation
requests were included in all telephone test profiles and tester
instructions. Reasonable accommodation requests were to be
made after the information regarding availability and the rental
unit was obtained, and thus requests were actually made in
629 of the 668 telephone tests conducted, because in 39 of the
tests, the conversation with the provider ended before reaching
the accommodation request.
Procedures and Scripts for Tester
Telephone Calls
The order of telephone calls to the housing provider by the
protected tester and the control tester was randomized, and the
call placements occurred no less than 1 hour and no more than
4 hours apart. The timing strategy was designed to increase the
likelihood of speaking with the same housing provider or agent
and to minimize the possibility of an incomplete test because
the unit was rented between the paired calls.
Proxy Relationships
The telephone testing protocol originally included the use of
proxies calling on behalf of both the control and protected
testers. During the telephone exploratory testing, however, it
was determined that use of a proxy for both testers within the
short timeframe created an unacceptable risk of detection by
housing providers, and thus the proxy caller for control testers
was dropped and the control testers called on their own behalf.
The tester calling as the proxy for the person with MD posed as
a friend or family member (and not a mental health professional
or case manager) of the potential renter. Protected proxies
expressly stated that they were calling for a person with MD
(“My friend/sibling has a mental health disability or illness” for
MI or “has a developmental disability” for I/DD).
18
As with e-mail tests, the disclosure of the protected tester’s dis-
ability occurred early in the communication and was designed
to be unambiguous. Table 5 includes the text of the telephone
testing scripts used by the proxy tester to disclose disability.
The profiles for both the protected proxy and the control tester
included that neither potential renter was currently living in his
or her own rental unit. The proxy caller for the individual with
MD was instructed to state that the person with MD had been
living in a psychiatric center for the past year (MI) or had been
living in a group home in the community for the past year (I/
DD). The control tester was instructed to state that he or she
was returning from school or relocating to the area.
Reveal of Disability
Although the proxy for the protected tester disclosed the MD to
the housing provider very clearly and early in the conversation,
the proxy was instructed not to provide a specific diagnosis (for
example, schizophrenia). Instead, any elaboration if requested
would be provided in the form of information on functional
aspects of the disability using common descriptions provided
by the focus groups and identified in the literature review
(for example, has emotional issues, difficulty remembering or
organizing, or needs help with taking care of self or managing
payments).
Table 5. Telephone Tester Scripts
Control Tester Protected Tester
My name is <first name> and I’m calling about the apartment. I’ve been
in school and I’m looking for my first place.
I’m <first name>. My <brother/sister> has a <disability identifier>. He/
she has been living in <alternate housing identifier> and I’m helping
him/her look for an apartment.
I’m <first name>. I just moved to town and I’m looking for my first
apartment.
My name is <first name>. My friend has a <disability identifier> and has
been living in <alternate housing identifier> and I’m helping him/her
look for an apartment.
17
In the pretesting, one of the reasonable requests used was for an additional key for a caregiver, but this request was determined to be too “soft;” that is, no housing
provider objected to providing an additional key, and their consideration of the key request seemed unrelated to the issue of MD—anyone who wanted an additional
key could get one. This accommodation request was then changed for the pilot testing to a request that the housing provider give the tenant a reminder to pay rent.
18
The decision to have the proxy be a friend or family member, as opposed to a mental health professional or a case manager, was based on previous research that
identified a set of concerns or assumptions that might be triggered by a call from a mental health professional or case manager (for example, severity of disability,
need for active treatment, or anticipation of need for significant accommodations).
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Examples of functional aspects that were evaluated in the pilot
test included—
• Goes to “X” for mental health treatment/services/support
(MI); or receives I/DD services in the community from
“X.” Control proxies said nothing about this issue.
• Requires assistance to cognitively or emotionally manage
or experiences difficulty with remembering or emotionally
managing; has someone who comes in 2 days a week to
help take care of him or her and the apartment (MI and I/
DD); only if asked by the landlord, additional details may
include that the person helps with paying bills, managing
money, cooking, and laundry. Control proxies said
nothing about this issue.
Statements about the functional aspects of the disability did
not request or require any action on the part of the housing
providers and, more importantly, were designed not to be confused
or conflated with a request for a reasonable accommodation.
Reasonable Accommodation Requests
Any request for a reasonable accommodation was made at
the end of the telephone call after all other information for
the test had been collected. The intent of the design was to
provide a second level of analysis related to the reasonable
accommodation request. As with the e-mail testing, reasonable
accommodation requests were designed to reflect the types of
accommodations commonly requested by people with MD as
part of the search for rental housing. Reasonable accommoda-
tion requests specifically avoided issues of “source of income”
or poverty that could introduce other variables into the test.
The accommodations sought in this test were—
• Need for an assistance animal and a waiver of any
associated fees.
• Request for a reminder from the housing provider by
telephone or in person to the person with the MD that
rent was due, as they have difficulty remembering.
Telephone Tester Recruitment
Recruitment of telephone tester candidates began in late
November 2013. Local fair housing advocacy organizations
and social work departments at universities in the tristate area
of Delaware, New Jersey, and Pennsylvania were contacted,
and recommendations for tester candidates were solicited.
The recruitment goal was to have both male and female
African-American and Caucasian matched pairs of testers
participate in training and testing.
All candidates were administered a telephone screening by the
test coordinator. This screening was followed by an in-person
interview during which the candidates’ voices were recorded.
The purpose of the recordings was to identify and screen out
candidates with discernible regional accents or other vocal
idiosyncrasies that might contribute to bias.
A review of testing background and experience level of each
candidate informed the preliminary decision on tester suitabil-
ity. Demographic information, which was used to determine
tester pairings, was provided by every candidate. The final
decisions on tester pairings—that is, which of the two testers in
a pair would assume the control and the protected-class roles
and who would be paired with whom—were based on the race,
age, gender, and experience levels of each tester and were made
by the project’s subject matter experts (SMEs) and the test coor-
dinator. As a result of these screening efforts, the initial training
class consisted entirely of experienced fair housing testers, all of
whom had previously conducted telephone testing.
Training for Telephone Testers
Classroom and practical training were conducted in late
January 2014, over a 2-day period in Philadelphia. The first day
of training consisted of a classroom orientation that covered a
variety of topics, including—
• A history of housing discrimination testing.
• Types of discriminatory housing practices.
• The process of fair housing testing.
• The strategic goals of the project.
• The telephone testing data collection process.
• Tester instructions and guidelines.
• Review of tester forms.
• Completion of testing assignments.
• Narrative writing.
• QC practices.
Practical training was conducted on the second day of training
in the call center where the telephone testing would be imple-
mented. Testers were given hands-on instruction on the use of
tester assignment and test report forms and were instructed on
how to use the data repository computer application to store
test result data. The training also included instruction on call
center telephone use and inbound voicemail access procedures.
Each trainee made practice test calls to SMEs on site and at
remote locations using carefully constructed tester profiles.
Trainees received immediate feedback from the test coordina-
tor, SMEs, or both after each call.
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Supplemental and Review Training
At times during the 9-month exploratory and pilot testing pe-
riod, additional telephone testers were trained to maintain the
demographic consistency of available testing pairs. Additional
Caucasian male and female paired teams were added after data
collection had begun. Supplemental trainings were led by the
test coordinator and included practice telephone tests to offsite
SMEs and hands-on telephone and computer training.
At the midpoint of the data collection period, SMEs conducted
a second classroom training session for all testers, during
which critical testing protocols and QC procedures were re-
viewed and emphasized.
19
This 1-day mandatory training was
conducted at the training facility for all telephone testers.
Conducting Telephone Pilot Testing and
Quality Control Procedures
Telephone tests were not conducted by individuals with MD,
but instead relied on a proxy design. Proxies posed as a friend
or family member seeking rental housing on behalf of an indi-
vidual with MD. Control testers contacted the housing provid-
er on their own behalf. Proxies calling on behalf of an individ-
ual with MD were provided detailed background information
on the profile of the person on whose behalf they were calling.
Control testers were provided similar background information
for testing purposes. As in all matched-pair testing, the profiles
of the individuals whose treatment is to be compared (here,
the people on whose behalf the proxies were calling) were
matched to the control tester on all relevant characteristics
except the variable being tested—the presence of MD. Thus,
paired potential renters’ profiles were of the same gender and
race and assigned personal and financial characteristics that
were as similar as possible, such as approximate move-in
date, desired rent range, credit score, current employment,
and income level. To avoid detection by housing providers as
a result of two testers representing individuals with identical
characteristics, the profiles of potential renters with disabilities
showed them to be slightly more qualified for the housing—for
example, having a higher income level or credit score—than
the paired potential renter without a disability. In addition,
to avoid bias caused by the proxies, proxies were of the same
gender, race, and approximate age as control testers.
Telephone tests were designed so that the proxy was to reveal
the protected potential renter’s MD to the housing provider at
the beginning of the conversation using a direct reveal of the
disability and a description of functional needs without provid-
ing an actual diagnosis.
20
The type of functional issues identified
matched the designated disability group (MI or I/DD).
All telephone testers were briefed on the nature of the QC
pro cedures instituted for this study. Some QC processes were
embedded in the selection of rental housing assignments and
test order. For example, the order of the calls within each tele-
phone test (control call made first or protected call made first) was
randomized to address any potential influence on test outcomes.
Rental housing assignments in the various markets were auto-
matically screened via data-mining tools using criteria such
as rent range, market location, and property owner or agent
uniqueness. The test assignment forms were automatically
populated with information from this data-mining process, then
printed and provided to each pair of proxies and testers. Testers
reviewed the test assignment forms and made telephone calls
based on a randomized order. The second telephone call in
each test was made within 1 to 4 hours after the initial test call
to reduce the chance of detection but to increase the likelihood
of speaking to the same property owner or agent.
QC procedures also were in place at the tester level. Proxies and
testers were trained that, after the completion of each telephone
engagement with a property owner or agent and before the
completion of a test narrative, the tester would be debriefed by
the onsite test coordinator and test details would be discussed.
Only after this debriefing would the proxy or tester complete
the test narrative and enter the results from the telephone test
form into the database.
Finally, all test forms and narratives for each paired test were
sent to SMEs for review and approval. Only after this approval
would a paired test be considered complete.
In-Person Testing Protocols
People with MD served exclusively as protected testers for the
in-person testing in this study. For in-person tests, which had
a smaller sample size and a longer execution period than other
modes of testing, the testers with MD (both MI and I/DD) were
19
Although a variety of issues were covered in this training, the importance of the timing of the protected tester’s identification of disability and the completion of the
matched control test were particularly stressed.
20
To compare the results of each paired test, it was essential that the housing provider unambiguously know from the beginning of the call that the protected
potential renter had MD. The proxies clearly and directly stated to the housing provider at the start of the conversation that they were calling on behalf of someone
with MD (MI or I/DD).
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accompanied by someone without MD posing as a friend.
This
protocol of a companion accompanying the protected tester
replicates what was adopted in the DDS 2005 for in-person
testing. The protected tester-and-companion team approach
provided support and assistance for the testers with disabilities
to ensure that test protocols were followed and that reporting
was complete and accurate.
Control testers were people without MD and were not accom-
panied. The tests were designed to reveal whether rental hous-
ing providers treated testers differently on the basis of MD. In
each test, the protected tester’s MD was revealed to the housing
provider by the protected tester at the beginning of the visit
to the property. In making this disclosure, the protected tester
used a direct reveal and description of functional needs with-
out providing an actual diagnosis. The disability identified was
the same for all testers in each disability group (MI or I/DD).
As in all matched-pair testing, the paired testers were matched
as to all relevant characteristics except for the variable being
tested—the MD. Paired testers were of the same gender and
race and were assigned personal and financial characteristics
designed to be as similar as possible, including, as described in
more detail subsequently, unit size needed, potential move-in
date, desired rent range, credit, current employment, and in-
come level. To avoid detection by housing providers as a result
of two testers having identical characteristics, protected tester
profiles were slightly more qualified for the housing being
sought; for example, having a slightly higher income level or
length of employment.
Procedures and Scripts for In-Person Tests
Advance calls were made by test coordinators before each
in-person visit to confirm that the housing unit remained
available, the location, and office hours and to determine
whether an appointment would be needed to see the unit. The
need for appointments differed in the two cities, with nearly
all Chicago properties requiring appointments but most of
the Washington, D.C. properties not (allowing for the testers
to “walk in” to visit the properties). Appointment contacts, if
necessary, were made primarily by telephone calls within 3
days of the publication of the advertisement by the companion
testers (for MI and I/DD testers) and by the control testers.
Testers’ companions did not reveal that they were looking
for an apartment for someone else, and no disclosure of any
disability was made during the call.
Test coordinators created test assignments based on the infor-
mation in the rental advertisements and developed profiles for
test assignments that matched the paired control and protected
testers on their relevant personal and financial characteristics—
for example, gender, race, approximate age, income, credit,
financial resources, employment, household composition, and
housing preferences such as the unit size, rent, and date need-
ed—and included an assigned e-mail address and telephone
number for each tester (which were monitored by the test
coordinators). Assignment forms for protected testers included
instructions on revealing their MD. All testers were seeking
their first apartment and were financially qualified for the units
they sought. The protected testers were either living in the
community (in a group home or with family) or coming out of
an institutional setting. Control testers had been living at home
with family or away at school. To avoid identical characteristics
that might lead to detection, protected testers’ profiles made
them slightly more qualified for the housing being sought; for
example, having a slightly higher income level or length of
employment. Test coordinators reviewed the assignment forms
with testers before each test.
Protected testers were accompanied on property visits by
companions who provided support to testers during data col-
lection. For example, when testers forgot to ask a question of a
property owner or agent, “got off track,” or “froze,” companion
testers were able to naturally prompt the tester or provide a
response. Companion testers also reassured testers and helped
them feel less nervous when in a new area of their community.
Companion testers also assisted by taking notes, organizing
and remembering information, helping out when unanticipated
situations arose, and in some cases providing transportation.
Both testers and companions approved of this model, reporting
that a companion’s presence helped some testers feel less
anxious because immediate support was available, that testers
and companion testers complemented one another during data
collection by offering different ideas, and that working as a pair
made the experience more enjoyable.
21
Testers and companion
testers also noted that the presence of a companion may also
have added credibility to the disclosure of a disability by testers.
Paired testers attempted to visit an assigned property on the
same day, but always visited within 24 hours of each other.
The order for whether the control or protected tester visited
the property first was randomized, as previously described.
21
The study team thought it was important to ask testers in what situations they believed they needed assistance (for example, writing, reading, or having a quiet
room in which to complete forms) and to be flexible in responding to testers’ emergent needs. The need for support decreased over time as testers increased their
skills and comfort. This support improved project efficiencies by better enabling a smaller group of testers to comfortably conduct multiple tests rather than having a
larger pool of testers who might conduct only a single test.
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Testers used protocols designed to allow for an assessment of
differential treatment; for example, protected testers revealed
their MD very early in the conversation, before information on
the unit was obtained. During site visits, testers inquired about
the advertised property and gathered information on the avail-
ability of the advertised unit or other similar units, addresses
and unit numbers, rental amounts, the application process,
fees, utilities, other terms and conditions, and amenities.
Testers asked to see the unit advertised and were willing to see
a model unit or other similar units. Testers were encouraged to
take notes during their visits.
Immediately after each test, the testers notified the test
coordinator that the test was completed, filled out the test
report form, and wrote a narrative. Protected testers and their
companions completed test reports and narratives together.
Testers turned their reports into the test coordinator by mid-
night of the day of the test and the narrative within 24 hours.
Test coordinators reviewed the completed test reports and
narratives and debriefed each tester. Test results were entered
into the testing database by the study team, and a weekly
report of completed tests was produced to monitor progress.
All documentation from in-person tests was reviewed and
approved by a designated member of the testing QC team.
Tester Profile and Reveal Strategy
It was critical to the test design that protected testers reveal
their disability at the beginning of the interaction so that the
presence of their MD was known to the housing providers or
agents before information about the unit was discussed. To
accomplish this reveal, protected testers were instructed to
greet a housing provider or agent, identify themselves by first
name, and state either “I have a developmental disability” or “I
have a mental health disability.” Their companions were then
introduced as someone who was helping them to find rental
housing and specifically was tasked with remembering what
questions to ask about the unit and helping to take notes about
the apartment.
22
The protected testers were not to name their specific disability
by providing a diagnosis or condition but were to reveal only
the broad category of “developmental disability” or “mental
health disability.” Test assignment forms provided each tester
with information about how the disability affected the tester’s
daily life (for example, difficulty remembering things or
difficulty staying organized). This information was mentioned
during the course of the test. See Table 6 for examples.
Test assignment forms also provided information about
protected testers’ current housing situation (for example, living
with family or in an institution, such as a nursing home or psy-
chiatric facility), which was also revealed at some point during
the test. Test assignment forms for control testers also included
information about their current housing situation. Control
testers were instructed to tell a housing provider or agent that
this was their first apartment search because they had been
living in the housing assigned in their profile (for example, with
family or away at school).
Table 6. Examples of How MD May Affect Functional Aspects of Life and Maintenance of Housing
Functional Aspects of MD
MI I/DD
Affiliation with a
community service
provider
Goes to “X” for mental health treatment/services/support Receives I/DD services in the community from “X”
Needs supports
with housing-related
management activities
(1) Requires assistance to help with organizing and
keeping track of things.
(1) Requires assistance to help with organizing and
keeping track of things.
(2) Has difficulty with remembering. (2) Has difficulty with remembering.
(3) Has someone who comes in 2 days a week to help
take care of him or her and the apartment (both).
(3) Has someone who comes in 2 days a week to help
take care of him or her and the apartment (both).
Only if asked by the landlord, additional details may
include that the person helps with paying bills, managing
money, cooking, and laundry.
Only if asked by the landlord, additional details may
include that the person helps with paying bills, managing
money, cooking, and laundry.
I/DD = intellectual or developmental disability. MD = mental disability. MI = mental illness.
22
Pretesting was used to evaluate the manner in which the MD was conveyed to the housing provider and to highlight any detection issues that might arise either
when setting up an appointment to visit a property or during the actual visit.
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In-Person Tester Recruitment and
Training
Test coordinators from community-based fair housing testing
organizations in the two metropolitan areas selected for
in-person testing, Access Living in Chicago and The Equal
Rights Center in Washington, D.C., recruited potential testers
from their existing tester pools (particularly for control testers
with no disability) and from a variety of community groups
and organizations in which people with MI and I/DD actively
participated or from whom they received housing or commu-
nity living services. These organizations’ extensive contacts and
continual networking with community groups and people with
disabilities were essential to this effort and would be difficult
for organizations not familiar with, and embedded within,
disability communities to replicate. The use of these communi-
ty-based testing organizations was a critical component of the
project and a key to success in actively supporting people with
I/DD and PD during the in-person testing.
To establish a pool of testers, test coordinators needed to allo-
cate significant time to the tester recruitment process, initially
recruiting about three times the number of testers needed
and continuing to recruit and train additional testers during
the actual testing period. For example, in some cases, most
notably among potential testers with I/DD, availability and
reliability were issues (for example, scheduling training, not
showing up for scheduled training, the availability of reliable
transportation, and the need to navigate new transportation
routes without support). The lack of availability and reliability
was particularly problematic given the need to coordinate the
schedules of protected testers with companion testers for initial
training, practice testing, and conducting each in-person test.
Because of employment disparities among the populations,
people with MD were found to be more available to work
as testers, but the ability to recruit control testers was more
challenging because of their higher employment rate.
Test coordinators communicated extensively with potential
testers to determine whether the tester’s abilities matched the
testing and reporting responsibilities involved in the testing
process, to assess whether candidates could complete the
essential tasks required of a tester. In these interactions, test
coordinators provided potential testers a candid and thorough
description of the project and their expected role (including an
emphasis on the responsibilities of being a tester versus other
roles within the project), assessing how the potential tester
understood his or her role, and the potential tester’s comfort
with pretending to be searching for an apartment and disclosing
his or her disability during the housing search process.
Test coordinators also noted the importance of identifying can-
didates who would be good companion testers. Strong rapport
between a tester with disabilities and his or her companion was
key to the tester’s comfort and to the quality and efficiency of
testing. This rapport was accomplished by creating opportu-
nities throughout the project—from initial training, to during
practice tests, and through the completion of all test assign-
ments—for each protected tester and the assigned companion
to get to know and become comfortable with each other. Test
coordinators regularly monitored how these relationships
progressed. If one member of a pair was not comfortable, pairs
were rematched.
Separate training sessions were held for each of the three
groups of testers—MI, I/DD (together with their companions),
and control testers. Based on initial insights from multiple focus
groups and discussions with the expert panel at the start of the
project, training approaches were modified for each group to
maximize their learning. For example, testers with I/DD had
project information broken into smaller units, followed imme-
diately by opportunities to practice a small skill, leading up to
practicing a full test under controlled circumstances, and finally
moving on to an actual practice test in the field. Testers with
MI received initial information in one sitting and then practiced
different scenarios.
The study team maintained flexibility in the tester training
protocols, simplifying and limiting the quantity of background
information and lecture for the MI and I/DD groups and
focusing on role-play, practice exercises, and open discussions
to enable the testers to gain a level of comfort with both the
testing process and working with a companion.
23
For the MI
and I/DD groups, training materials deemphasized complicated
text, reduced the number of ideas presented at one time, and
incorporated graphics, photos, and images to illustrate more
abstract points such as civil rights.
Frequent breaks were provided during all training sessions to
allow for testers to assimilate new information and experiences.
The training sessions also helped test coordinators in making
final determinations about a potential tester’s involvement in
the actual in-person tests.
23
Trainings included opportunities first for testers to observe testing skits performed by test coordinators and project staff, and then for testing pairs to actively
engage in several different testing scenarios with role-play (moving from working in pairs with an assigned project staff member to role-play in front of the whole
group and getting feedback afterward).
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Conducting In-Person Pilot Testing and
Quality Control Procedures
The in-person pilot testing was conducted in Chicago and
Washington, D.C., from June to November 2014. Samples of
available rental units were gathered from rental advertisement
contact data extracted from online rental advertisements by the
automated scraper tool and weekly random selections of ap-
proximately 20 to 25 rental property advertisements provided
by the study team to the test coordinators in each city.
Overall Data Collection Oversight,
Management, and Quality Control
For each mode of testing, testers received training and
retraining as needed during the data collection period. During
initial training, testers engaged in role-playing, using the actual
testing protocols. This process facilitated learning and was the
basis for the evaluation of tester capabilities and an assessment
of whether additional training was needed. This process of
evaluation continued throughout training, exploratory testing,
and actual pilot testing.
E-mail Testing
The research team used a proprietary Microsoft Access program
that was customized for this particular paired testing data
collection. Logic and other QC checks are imbedded in the program
to facilitate a high level of accuracy when recording data. In
addition, e-mail testers were assigned specific markets to facili-
tate familiarity with local address formats and to reduce errors.
Telephone Testing
Telephone testers were paired into teams, and the team config-
uration remained the same over the course of the testing, absent
illness or other uncontrollable events. After the completion of
each test, results were reviewed at least two times, once by the
QC supervisor and a second time by senior testing experts. The
reviews validated the tests, ensured protocols were followed,
and confirmed that the information recorded was complete,
clear, and unambiguous.
In-Person Testing
In-person tests were reviewed by the test coordinator within
24 hours of test completion. In addition, each paired test was
reviewed by senior testing experts to ensure the complex testing
protocols were followed and to confirm that the information
recorded was complete, clear, and unambiguous.
In all testing modes, overall, QC was implemented with stringent
reviews of protocol and processes throughout the data collec-
tion period.
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Sampling Methods
Sampling Frame
The sampling frame for the paired testing in this project was
designed with the goal of completing 1,000 matched-pair tests:
500 matched-pair tests to assess discrimination against people
with MI and 500 matched-pair tests to assess discrimination
against people with I/DD (Table 7). An additional 100 paired
tests were to be conducted by e-mail specifically to assess the
willingness of housing providers to make reasonable accom-
modations for people with the two identified categories of MD.
Table 8 summarizes the sampling frame for the project and
how the 1,000 matched-pair tests were allocated among the
three selected rental market strata—medium-sized markets
(population of 500,000 to 1,250,000), large-sized markets
(population of 1,250,000 to 2,500,000), and very large-sized
markets (population of 2,500,000 or more). As noted, tests
in all markets were equally divided between those focused on
individuals with MI and those with I/DD.
To avoid issues of detection, small markets with populations
less than 500,000 were excluded from all pilot testing. Tele-
phone and e-mail testing were conducted in all three market
size types, whereas in-person testing was conducted only in the
very large markets.
Allocation of Tests Across Market Size
Test allocation was guided by market and population char-
acteristics. As shown in Table 9, the number of test markets
selected within each stratum for the pilot testing mirrors the
distribution of the population across metropolitan statistical
Table 7. Sampling Frame for People With MD, by Test Type
Matched-Pair Test Type Total MI I/DD
E-mail 200 100 100
E-mail + reasonable accommodation 100 50 50
Telephone 600 300 300
In person 100 50 50
Total 1,000 500 500
I/DD = intellectual or developmental disability. MD = mental disability. MI = mental illness.
Table 8. Rental Market Sampling Frame
Matched-Pair Test Type Total
Market Population Size
Medium
(500,000 to 1,250,000)
Large
(1,250,000 to 2,500,000)
Very Large
(2,500,000 or more)
n = 4 n = 2 n = 2
E-mail 300 20 40 240
Telephone 600 200 200 200
In person 100 0 0 100
Total 1,000 220 240 540
Table 9. Allocation of Tests Across Market Size
Market Population Size
Total
Medium
(500,000 to 1,250,000)
Large
(1,250,000 to 2,500,000)
Very Large
(2,500,000 or more)
U.S. distribution
Percent of population 21 21 58 100
Percent of all markets 56 23 21 100
Pilot testing
Number of markets 4 2 2 8
a
Percent of markets 50 25 25 100
Percent of paired tests 20 20 60 100
a
Although the plan was to test in four medium-sized markets, possible detection before the completion of data collection in one of the markets,
New Haven-Milford, CT, caused the addition of Syracuse, NY. Thus, nine total markets were included in the final analysis.
Source of U.S. population and market distribution: 2010 American Community Survey, SF1, Table P1
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areas (MSA) and micropolitan statistical areas based on 2010
American Community Survey (ACS) data. The percentage
distribution of paired tests across strata similarly mirrors the
population percentage distribution based on 2010 census data.
For example, because approximately 20 percent of the U.S.
population resides in markets with populations ranging from
0.5 to 1.25 million, 20 percent of the total number of paired
tests was implemented across markets of this size.
Sample of Metropolitan Areas
Based on the sampling design and sample frame, the selection
of markets and allocation of tests across markets were con-
ducted in two stages: (1) identify and characterize the pool of
potential markets for inclusion and (2) select the markets for
testing.
Stage 1: Identifying and Characterizing
Potential Markets
Using MSA population data, 374 MSAs were divided into four
categories based on size—270 small-sized markets (population
less than 500,000), 58 medium-sized markets (population of
500,000 to 1,250,000), 25 large-sized markets (population
of 1,250,000 to 2,500,000), and 22 very large-sized markets
(population of 2,500,000 or more).
24
To further differentiate these markets, the proportion of people
with any disability and proportion of people with cognitive
disabilities, based on the 2009–2011 ACS and the 2010
census, were considered.
25
These data were included to ensure
that each selected market contained a typical (within a range)
proportion of people with MD and a sufficient population from
which testers for in-person testing could be drawn. These data
are summarized in Table 10.
Markets were also differentiated by whether the state had an
Olmstead Plan, any active Olmstead-related lawsuits, or both
26
and by if the state received Centers for Medicare and Medicaid
Services, or CMS, funds to transition people with MD out of
institutions to the community via a Money Follows the Person
grant. If the state met either of these conditions, markets were
further differentiated by how many people had transitioned and
whether the state had met its transition goals.
27
The presence
and strength of state-level efforts to move individuals with
disabilities from institutional settings to community-based
settings was presumed to have an effect on rental markets by
increasing awareness of the rights of people with disabilities
under the Fair Housing Act and the Americans with Disabilities
Act among both housing providers and prospective tenants,
thus potentially affecting testing.
Stage 2: Selecting the Study Markets
This study used a purposive sampling approach to identify
specific markets for testing based on population size and certain
characteristics, as described previously. A purposive approach
was used for several reasons.
• The selected markets had to reflect a proportion of people
with MD that was typical (in other words, an unusually
high or low percentage of people with disabilities should
not reside in the market).
Table 10. Distribution of Population With Disabilities and Proportion With Cognitive Disabilities, 2009–2011
MSA
Size
Number
of MSAs
Proportion of Population With Disabilities
(%)
Proportion of Population With Cognitive Disabilities
(%)
Median Average Minimum Maximum Median Average Minimum Maximum
Very large 22 9.6 10.2 7.8 13.6 30.5 31.1 20.8 48.2
Large 25 11.5 11.9 7.7 19.8 22.6 24.9 9.3 53.6
Medium 58 12.2 12.2 7.2 16.4 22.9 23.9 15.0 40.0
MSA = metropolitan statistical area.
Sources: 2009–11 American Community Survey; 2010 census
24
To avoid issues of detection, the 270 small-sized markets were excluded from all pilot testing.
25
The ACS and census count an individual as having a cognitive disability if he or she reported that, due to a physical, mental, or emotional condition, they had
“serious difficulty concentrating, remembering, or making decisions.” The term “cognitive disabilities” is formally used within census data to be inclusive of the same
categories as the term “mental disabilities” as used by HUD. It includes MI and I/DD. As the source of the data in Table 9 is from census data, the term cognitive
disabilities is used. For all other purposes of this study, the term “mental disabilities” is used.
26
This grouping includes any plan instituted as a result of a judgment or settlement, or any pending litigation, arising out of the U.S. Supreme Court’s ruling in
Olmstead v. L.C., 527 U.S. 581 (1999) (unjustified segregation of people with disabilities constitutes discrimination in violation of Title II of the Americans with
Disabilities Act).
27
Data for these measures were attained from Ng, Wong, and Harrington (2013), on Olmstead Plan and active lawsuits, and from Denny-Brown et al. (2011), on
People transitioned as of June 2011 and 2010 Transition Goal achieved.
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• The selected markets for in-person testing had to contain
a sufficient population of people with MD from which
testers could be drawn.
• The selected markets for in-person testing had to include
local fair housing and enforcement agencies that had
expertise in working with people with MD.
• To the extent possible, the research team sought to measure
any effects of Olmstead on differential treatment of people
with MD; thus, at least one market in a state that is imple-
menting an Olmstead Plan was intentionally selected.
After applying these criteria to produce a pool of potential
mar kets, the list was narrowed further by identifying those
markets that represent a typical mix of people with disabilities
relative to the rest of the population and specifically a typical
mix of people with cognitive disabilities (as defined by ACS
and the census) as a proportion of all people with disabilities.
28
Using these data and the previously discussed criteria, the final
market pool contained 17 medium and 7 large MSAs (see Table
11) based on those rates that fell approximately between the
25th and 75th percentiles for disability and cognitive disability.
These markets preliminarily selected were then discussed with
the expert panel regarding any specific factors such as Olmstead
implementation activities and disability-related fair housing
litigation that might bias sample selection and results. The
panel’s feedback was taken into consideration in making the
final market selections. As a final step, an analysis of secondary
data on key characteristics relevant to the testing process of
each market was conducted, including an assessment of the
percentage of total housing that was available for rent, rental
vacancy rates, and craigslist coverage of housing rentals.
Table 11. Pool of Possible Markets (MSAs) Based on Statistical Criteria for Inclusion
MSA
State-Level Data
Has an
Olmstead Plan
Active Disability
Lawsuits
People Transitioned
as of June 2011
2010 Transition
Goal Achieved
Large markets
Cincinnati-Middletown, OH-KY-IN Yes Yes 1,139 Yes
Memphis, TN-MS-AR No No NA NA
Milwaukee-Waukesha-West Allis, WI Yes Yes 145 No
Nashville-Davidson--Murfreesboro--Franklin, TN No No NA NA
Providence-New Bedford-Fall River, RI-MA No No NA NA
Sacramento--Arden-Arcade--Roseville, CA Yes Yes 537 No
Virginia Beach-Norfolk-Newport News, VA-NC No No 269 Yes
Medium markets
Albany-Schenectady-Troy, NY Yes Yes 370 Yes
Albuquerque, NM No No NA NA
Allentown-Bethlehem-Easton, PA-NJ No Yes 719 Yes
Bakersfield-Delano, CA Yes Yes 537 No
Baton Rouge, LA No No 164 No
Buffalo-Niagara Falls, NY Yes Yes 370 Yes
Cape Coral-Fort Myers, FL No Yes NA NA
Columbia, SC No No NA NA
Fresno, CA Yes Yes 537 No
Greenville-Mauldin-Easley, SC No No NA NA
Harrisburg-Carlisle, PA No Yes 719 Yes
Jackson, MS Yes Yes NA NA
New Haven-Milford, CT Yes Yes 561 Yes
New Orleans-Metairie-Kenner, LA No No 164 No
North Port-Bradenton-Sarasota, FL No Yes NA NA
Rochester, NY Yes Yes 370 Yes
Syracuse, NY Yes Yes 370 Yes
MSA = metropolitan statistical area. NA = data not reported or available for that MSA.
Source: Final Research Design & Data Collection Plan, approved September 13, 2013
28
As shown in Table 10, the range of people with disabilities varies across the MSAs (the range is the difference between minimum and maximum values) and is
much narrower than ranges observed in the distribution of people with cognitive disabilities within the group with disabilities. The data on cognitive disabilities from
the ACS are imputed. The observed higher variability in the percentage of people with cognitive disabilities within the population with disabilities per market may be
a result of how the imputation was done, or it may be representative of the true distribution.
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The nine MSA markets selected for this project are identified in
Table 12.
29
Table 13 shows the planned sample allocation of paired
tests across the selected markets within each size category.
Approximately 60 percent of the allocated matched-pair tests
fall within the very large markets and 20 percent fall in each of
the large- and medium-sized markets.
Selection of Advertised Units
Analysis of 2011 American Housing Survey (AHS) data reveals
that most people who moved into a rental housing unit in the
previous year reported they found their current apartment via
word of mouth (34 percent), followed by a sign outside of a
building (11 percent), craigslist (11 percent), and the large
category of “other.”
30
For the purpose of this study, neither
word of mouth nor signs on buildings were effective means for
identifying the large numbers of available units necessary for
paired testing. Housing providers also use multiple outlets to
advertise their available units, however—especially in online
markets, such as craigslist and other sources.
Table 12. Selected Markets by Size and Olmstead Status
Olmstead Status
Market (MSA) Size
Very Large Large Medium
Olmstead Plan or active Olmstead-
related settlement
Chicago-Joliet-Naperville, IL-IN-WI Cincinnati-Middletown, OH-KY-IN Fresno, CA
New Haven-Milford, CT
Syracuse, NY
No Olmstead Plan
Washington-Arlington-Alexandria,
DC-VA-MD-WV
Nashville-Davidson--Murfreesboro--
Franklin, TN
Albuquerque, NM
Harrisburg-Carlisle, PA
MSA = metropolitan statistical area.
Table 13. Sample Allocation Plan Across Communities and Test Types by Market Size
Matched-
Pair Test
Type
Very Large Markets
(2,500,000 or more)
Large Markets
(1,250,000 to 2,500,000)
Medium Markets
(500,000 to 1,250,000)
Total
Chicago-
Joliet-
Naperville,
IL-IN-WI
Washington-
Arlington-
Alexandria,
DC-VA-MD-
WV
Nashville-
Davidson--
Murfreesboro-
-Franklin, TN
Cincinnati-
Middletown,
OH-KY-IN
Albuquerque,
NM
Fresno, CA
Harrisburg-
Carlisle, PA
New Haven-
Milford, CT/
Syracuse, NY
a
MI I/DD MI I/DD MI I/DD MI I/DD MI I/DD MI I/DD MI I/DD MI I/DD
Matched-pair tests with reasonable accommodation request
E-mail 10 10 10 10 10 10 10 10 3 3 3 3 2 2 2 2 100
Telephone 50 50 50 50 50 50 50 50 25 25 25 25 25 25 25 25 600
Total 60 60 60 60 60 60 60 60 28 28 28 28 27 27 27 27 700
Matched-pair tests without reasonable accommodation request
E-mail 50 50 50 50 200
In person 25 25 25 25 100
Total 75 75 75 75 300
Total matched-pair tests
E-mail 60 60 60 60 10 10 10 10 3 3 3 3 2 2 2 2 300
Telephone 50 50 50 50 50 50 50 50 25 25 25 25 25 25 25 25 600
In person 25 25 25 25 100
Total 135 135 135 135 60 60 60 60 28 28 28 28 28 27 27 27 1,000
I/DD = intellectual or developmental disability. MI = mental illness.
a
Possible detection in one of the markets, the New Haven-Milford, CT Metropolitan Statistical Area (MSA), before the completion of data collection
caused the addition of the Syracuse, NY MSA. Thus, nine total markets were included in the final analysis.
29
The MSA selection process placed priority on including markets consistent with the expert panel’s criteria for sufficient Craigslist coverage, including markets
with and without Olmstead provisions, and on accounting for the number of rental units and vacancy rates. The MSA selection process also considered geographic
representation. Given the total number of markets included in the sampling frame and the need to delineate by Olmstead status for markets with sufficient Craigslist
coverage, however, those factors took precedence over a perfect regional distribution of study markets.
30
Note that, given the challenges of determining in the AHS if a person has a disability, these data were not further manipulated to produce cross-tabulations by
disability. Also, the data include all people with disabilities, which means they include people with both physical disabilities and MD.
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Therefore, the sample of units for possible testing was drawn
primarily from craigslist. Print sources were also included as
possible sources of rental advertising, particularly in markets
where craigslist is not sufficient and local newspapers did
not have an online presence for apartment rental listings to
generate a sufficient sample.
31
Basing their observations on the literature review and focus
group feedback, the study team noted that people with MD
use a variety of outlets to search for available rental housing,
including mental health and social service agencies. The study
team intentionally sampled from sources used by all renters,
excluding any outlets that specifically help people with MD get
into subsidized housing, that have access to a pool of landlords
with whom the agency has an existing relationship, or both.
These sources were excluded to obtain a neutral market sample
of units that had not been prescreened to accept people with
disabilities and that would therefore reflect the rental search
experience in the general market.
Risk of Detection
A key concern when selecting properties to test was detection
by housing providers that testing was under way in their mar-
ket. For example, testing for discrimination against two sub-
groups (MI and I/DD) within the same market could increase
the risk of detection if the same housing provider is contacted
for each subgroup. Craigslist and local online newspaper apart-
ment rental ads can likewise contain multiple advertisements
from the same housing provider. For example, in housing
markets where realty agencies list available rental units, such
agencies can post multiple advertisements by multiple agents
within the same company. If those agents received inquiries
for different available rental units from testers using the same
or similar profiles, they might have detected the testing, which
could have, in turn, affected the results of the study.
One strategy to minimize the likelihood of detection by a housing
provider during testing would have been to sample housing
providers only once within each MSA. This strategy, however,
would have resulted in a dramatic reduction in the pool of
housing providers and testable properties, given that housing
providers may have multiple sites within a market, use a
man agement company or leasing agent that represents many
properties, or both. Instead of adopting this strategy, other
precautions to avoid detection were taken. These precautions
included—
• Using software to track and filter out duplicate rental
advertisements within a specified timeframe (for example,
3 weeks).
• Ensuring that no housing provider was tested more than
once for the same type of MD.
• Lengthening the timeframe between tests if an advertised
unit was selected for both MI and I/DD testing.
• Staggering the tests to ensure that the different modes of
testing (e-mail, telephone, and in person) were conducted
sequentially—e-mail first, then telephone, then in-person—
with the e-mail and telephone testing in the Chicago and
Washington, D.C. markets administered first, before the
in-person testing in those markets began.
Sampling of Units
Sampling of the advertised rental units within MSAs was
accomplished using two methods—one automated and the
other manual.
Under the automated method, to streamline the sampling of
advertised housing units, a data scraper tool was used to select
and collect data from advertisements on craigslist in each study
MSA. The tool filtered the advertisements using the preselected
criteria in table 14, excluding advertisements that did not
Table 14. Criteria for Inclusion in/Exclusion From Unit
Sample
Criteria for inclusion in unit sample
1. Proper unit size (studio, one bedroom, or two bedrooms).
a
2. Rent within specified range.
3. Adequate provider contact information available, including—
• Unitaddress(forin-persontesting).
• Telephonenumber(fortelephoneandin-persontesting).
• E-mailaddress(fore-mailtesting).
Criteria for exclusion from unit sample
1. Housing restricted solely to seniors and/or people with disabilities
(for example, single-site housing).
2. Rents outside specified range (highest and lowest 10% were
thrown out, to exclude misplaced or misleading listings).
3. For in-person testing sample, recent (within 30 days) selection for
e-mail or telephone testing.
a
Two-bedroom units, a unit size still credibly sought by an individual,
were included because of a limited number of available one-bedroom
units, especially for in-person tests.
31
A multipronged approach to marketing units is encouraged by various resources for rental housing providers. See, for example, Wagner (2008).
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provide the rent or other pertinent information for each testing
mode. Table 14 summarizes the criteria for inclusion and
exclusion used in this sampling.
Under the manual sampling method, local newspapers and
other materials featuring rental housing advertisements in the
selected markets were sampled, with every 7seventh post se-
lected. Filters analogous to those identified for the data scraper
tool were also applied in the manual sampling process.
The automatically and manually mined advertisements were
loaded daily into a Microsoft Access database. Data entry
personnel then reviewed and removed any new advertisement
that met one of the following three conditions: (1) included
data for a housing provider that was already in the database
(phone number, address, agent/owner name, e-mail addresses,
and so on), (2) referenced units that had already been included
in the study sample, or (3) included contact information in the
advertisement that matched any of the contact information for
an advertisement that had been included in the study within
the previous 3 weeks. Information on properties ultimately
selected for testing were then provided weekly to test coordina-
tion teams for each MSA for assignment to testers.
32
Figure 1 illustrates the data collection process, from the identifi-
cation of sample rental unit advertisements, through the testing,
to the analysis of results.
Figure 1. Flow of Sample Selection and Testing Process
Sample/Testing Process Flow
E-mail testing
Telephone testing
In-person testing
Automated and
manual aggregation
of craigslist local
listing sample
Conduct 200
paired tests
(0.5–1.25M, 1.25–2.5M,
2.5M+ markets)
Conduct 100 paired
tests w/RA request*
(0.5–1.25M, 1.25–2.5M,
2.5M+ markets)
*Protected tester only
Analysis database
Testing data, tester forms,
original housing posts, etc.
Sampling database
Manual aggregation of
other (e.g. newspaper)
local listing sample
Conduct 600 paired
tests
(0.5–1.25M, 1.25–2.5M,
2.5M+ markets)
Conduct 100 paired
tests
(2.5M+ markets only)
RA = reasonable accommodation.
32
This method of avoiding detection was successful in M. Davis and Company, Inc.’s most recent housing discrimination study (HUD, 2013a).
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Analysis of Testing Findings
Summary of Tests Conducted
During the pilot testing period, 1,128 paired tests were ad-
ministered. Paired testing was conducted using three different
modes of testing protocols: e-mail, telephone, and in-person
testing. Some subset of both telephone tests and e-mail tests
included a request for a reasonable accommodation by the
protected tester. Table 15 summarizes the distribution of tests
by test mode.
Table 15. Total Tests Conducted by Test Mode
Test Mode Tests
E-mail 359
(Subset of e-mail tests with a reasonable accommodation
request)
(78)
Telephone 668
(Subset of telephone tests with a reasonable accommodation
request)
(629)
In person 101
Total tests 1,128
E-mail Testing
Table 16 summarizes the number and distribution of e-mail
tests administered for people with MI and people with I/DD
across three distinct market sizes. Via e-mail, 359 matched-pair
tests were administered, with approximately 73.54 percent of
the tests conducted within the very large markets, 17.5 percent
within the large markets, and the remaining 8.9 percent within
the medium markets.
Figure 2 represents the response rates of the 359 paired e-mail
tests that were conducted during the pilot testing.
Based on the existence, nature, and extent of response from
housing providers, paired testing using an e-mail protocol
enables researchers to observe two different levels of differential
treatment. The first level of differential treatment that can be
observed is the disparity between the number of tests for which
the control tester received a response from the housing provider
and the protected tester did not. The lack of a response to the
protected tester when the control tester received a response is
considered in measuring discrimination.
Figure 2. Response Rate of E-mail Paired Tests
Control
tester
received a
response
n = 154
Only control
tester
received a
response
n = 63
Both
testers
received a
response
n = 91
Protected
tester
received a
response
n = 124
No response from provider
n = 172
Some response from provider
n = 187
Total e-mail tests conducted
n = 359
Only
protected
tester
received a
response
n = 33
Table 16. E-mail Sample Allocation by Market Size
Matched-Pair Test Type
Market Size
Total
Very Large
(2,500,000 or More)
Large
(1,250,000 to 2,500,000)
Medium
(500,000 to 1,250,000)
Matched-pair tests
MI 120 15 8 143
I/DD 121 10 7 138
Total 241 25 15 281
Matched-pair tests with request for reasonable accommodation
MI 13 19 8 40
I/DD 10 19 9 38
Total 23 38 17 78
Sum total 264 63 32 359
I/DD = intellectual or developmental disability. MI = mental illness.
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The second level of differential treatment that can be observed
is the difference in how the housing providers interact with the
testers by tracking the incidence of positive treatment, such as
stating whether the unit was available or inviting the potential
renter to contact the housing provider. To be included in the
second-level analysis for differential treatment, both members
of the pair needed to receive an e-mail response within a given
time period. In this study, in 91 paired e-mail tests, both
testers in the pair received a response from the housing pro-
vider within the requisite timeframe. The outcomes observed
in these pairs were used to measure different dimensions of
discrimination against people with MD.
Telephone Testing
Table 17 summarizes the number and distribution of tele-
phone tests conducted for people with MI and I/DD across
three market sizes. Data are differentiated into three sets of
tests: (1) the total number of all matched-pair tests with and
without an accompanying reasonable accommodation request,
(2) the number of matched-pair tests with an accompanying
reasonable accommodation request, and (3) the number of
matched-pair test without a reasonable accommodation request.
Of the 668 telephone tests conducted, the protected tester made
a reasonable accommodation request in 629 (94.2 percent).
Approximately 30.4 percent of the tests were conducted in the
very large markets, 39.4 percent in the large markets, and the
rest in the medium markets.
In-Person Testing
Table 18 summarizes the number and distribution of in-person
matched-pair tests, which were conducted only in the two very
large markets. This mode of testing did not include a reasonable
accommodation request.
Table 18. In-Person Sample Allocation by Location
Matched-Pair
Test Type
Market
Total
Chicago Washington, D.C.
MI 26 24 50
I/DD 26 25 51
Total 52 49 101
I/DD = intellectual or developmental disability. MI = mental illness.
The 101 tests completed exceeded the target goal. The distribu-
tion across disability types was virtually equal, with one extra
test in the I/DD sample. The pairs were matched so that both
testers within a pair had the same race and gender; however,
the total tester pool was not evenly split across race or gender.
Overall, the sample had more women than men for the MI tests
and more men than women for the I/DD tests. MI testing pairs
were also more likely to be African-American, and I/DD testing
pairs were more likely to be Caucasian.
Measuring Differential Treatment
Results from the e-mail, telephone, and in-person tests were
analyzed to determine whether the protected tester with MD
was treated unfavorably relative to the control tester. This
determination was based on information received by the testers
during their interactions with the housing provider, which
were characterized by the research team as either favorable or
unfavorable. Previous studies of housing discrimination have
Table 17. Telephone Testing Allocation by Market Size
Matched-Pair Test Type
Market Size
Total
Very Large
(2,500,000 or More)
Large
(1,250,000 to 2,500,000)
Medium
(500,000 to 1,250,000)
Total matched-pair tests
MI 110 142 105 357
I/DD 92 121 98 311
Total 202 263 203 668
Matched-pair tests with reasonable accommodation requests
MI 106 128 105 339
I/DD 88 108 94 290
Total 194 236 199 629
Matched-pair tests without reasonable accommodation requests
MI 4 15 0 19
I/DD 4 12 4 20
Total 8 27 4 39
I/DD = intellectual or developmental disability. MI = mental illness.
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shown that housing providers can respond in various favorable
or unfavorable manners to an applicant. In this study, the
following indicators of favorable or unfavorable responses that
testers could receive included—
• Whether testers received a response to their inquiry, for
the first level of unfavorable treatment testing (e-mail
testing mode).
• If testers were told the advertised unit or similar unit in
the same building or development was available.
• How many available units testers were told about.
• If testers were invited to inspect the unit.
• If testers were advised to call the housing provider (e-mail
only).
• Whether testers were asked to provide additional informa-
tion regarding their qualifications as an applicant (that is,
their credit score/income/employment).
• Whether testers were reminded about qualifications they
must possess to rent the unit.
• Whether the unit was available and, if not, whether testers
were given a reason for the unit not being available.
• If testers were given the same information on rents,
security deposits, application fees, or other fees.
• If testers were given the same information on specials or
incentives to rent.
• If testers were given the same information on amenities
and services available.
• Whether testers were encouraged to look at a different unit
owned by the same landlord (that is, “This unit actually isn’t
available, but I have another unit in the same building you
might be interested in”).
• Whether testers were referred to a different complex altogether.
• Whether the housing provider was willing to grant a
reasonable accommodation (only when applicable).
Table 19 summarizes a treatment indicator matrix, showing the
behavior observed in the testing that was assessed to determine
how the outcomes data from all tests were analyzed by testing
mode—e-mail, telephone, and in person. Although some indi-
cators are shared by all three modes, each also has indicators
unique to that mode. The data were broken out into four categories:
(1) contact with housing providers, (2) availability, (3) tester
engagement, and (4) reasonable accommodation, each of which
are described in detail in Table 19.
Table 19. Differential Treatment Indicator Matrix (1 of 2)
Outcome
Category
Outcome
Subcategory
Test Modality
E-mail Telephone In Person
Contact with
housing provider
Initial contact Housing provider/agent
responded
Able to speak to housing
provider/agent
Able to meet with housing provider/agent
Number of responses
Meeting with housing provider/agent in group
or as individual
Housing provider/agent
requests contact information
Housing provider/agent
requests contact information
Housing provider/agent requests contact
information
Timing Amount of time between
housing inquiry and first
response
Amount of time between arrival and first
greeting by housing provider/agent/staff
Amount of time between arrival and meeting
with housing provider/agent
Duration of in-person test
Availability of
housing unit
Original unit(s) Advertised unit(s) available Advertised unit(s) available Advertised unit(s) available
Unit(s) within “desired housing request”
available
Number of units Number of units Number of units within “desired housing
request”
Other units Additional available unit(s) Additional available unit(s) Unit(s) outside “desired housing request”
available
Number of units? Number of units? Number of units outside “desired housing
request”
Total units Total number of available
units
Total number of available
units
Total number of available units
Waiting list Offered to be placed on
waiting list
Offered to be placed on
waiting list
Offered to be placed on waiting list
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Table 19. Differential Treatment Indicator Matrix (2 of 2)
Outcome
Category
Outcome
Subcategory
Test Modality
E-mail Telephone In Person
Tester
engagement
Unit selection
method
Method(s) for selection of unit(s) to view
Agent or tester selects unit(s) to view
Details of
discussed unit(s)
Address Address Address
Apt. number Apt. number Apt. number
Type Type Type
Number of bedrooms Number of bedrooms Number of bedrooms
Rent Rent Rent
Security deposit Security deposit Security deposit
Date of availability Date of availability Date of availability
Fees Fees Fees
Apartment shown
Apartment condition ready for move in
(assessed only for vacant units)
Total number of shown apartments that meet
tester needs
Information
disclosed by
agent/housing
provider
Application mentioned Application mentioned Application mentioned
Application offered Application offered Application offered
Duration of application
process
Duration of application
process
Duration of application process
Co-signer mentioned? Co-signer mentioned? Co-signer mentioned?
Security deposit? Security deposit? Security deposit?
Other fees Other fees Other fees
Amenities Amenities Amenities
Incentives Incentives Incentives
Encouraging/discouraging
remarks
Encouraging/discouraging
remarks
Encouraging/discouraging remarks
Disability comments Disability comments Disability comments
Referred to alternative
residence type
Referred to alternative
residence type
Referred to alternative residence type
Comments/questions
on race, color, national
origin, religion, sex, disability,
children, age, marital status,
source of income, or sexual
orientation
Comments/questions
on race, color, national
origin, religion, sex, disability,
children, age, marital status,
source of income, or sexual
orientation
Comments/questions on race, color, national
origin, religion, sex, disability, children, age,
marital status, source of income, or sexual
orientation
Future contact Future contact Future contact
Unit location comments Unit location comments Unit location comments
Other
qualifications
Escorted to apts
Proof of citizenship prior to showing
Require personal ID Require personal ID Require personal ID
Housing provider/agent
indicated applicant is “not
qualified”
Housing provider/agent
indicated applicant is “not
qualified”
Housing provider/agent indicated applicant is
“not qualified”
References References References
Credit check (as part of
application)
Credit check (as part of
application)
Credit check (as part of application)
Criminal background check Criminal background check Criminal background check
Reasonable
accommodation
Housing provider/agent
responded to request?
Housing provider/agent
responded to request?
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Data Analysis
Analysis of the responses of housing providers observed during
the testing followed the approach used in the 2000 Housing
Discrimination Study (HUD, 2002) and DDS 2005 studies,
which assessed the extent to which one tester is consistently
favored over the other in the treatment received from housing
providers based on their inquiries. For example, tests are clas-
sified as “control tester favored” if the control tester received
favorable treatment on at least one indicator of interest and the
protected tester received no favorable treatment on the same
indicator(s).Tests are conversely classified as “protected tester
favored” if the protected tester received favorable treatment on
at least one indicator of interest and the control tester received
no favorable treatment on the same indicator(s).
Typical treatment indicators that have been tracked in past
housing discrimination studies, including HUD (2013a), a
paired e-mail testing study, include whether each tester (1)
received a response, (2) in a pair received a response, (3) was
told the unit was available, (4) was told to contact the provid-
er, and (5) was invited to inspect the unit. In addition to track-
ing these five indicators, this study explored other indicators
related to quality of applicant, costs, and encouragement using
a validated qualitative approach to analyze e-mail data (see
Appendix A, Qualitative Analyses and Findings on Overt and
Subtle Discrimination Against People With Mental Disabilities
by Different Testing Modes).
The testing conducted in this study estimates the incidence
of discrimination by studying favorable and unfavorable out-
comes for each test dimension. A favorable outcome represents
a response in which the tester received an affirmative value on
the test dimension, and an unfavorable outcome represents a
response in which the tester received a negative value on the
test dimension. Each test had four possible combinations of
outcomes: (1) both the control and protected testers received
favorable outcomes, (2) both testers received unfavorable
outcomes, (3) only the control tester received a favorable
outcome, or (4) only the protected tester received a favorable
outcome. The relationships among the four combinations are
summarized in Table 20.
Table 20. Possible Outcomes Matrix
Possible Outcomes
Protected
Favorable Unfavorable
Control Favorable
(1) Both (3) Control favored
Unfavorable
(4) MI or I/DD favored (2) Both
I/DD = intellectual or developmental disability. MI = mental illness.
Discrimination is assumed when the proportion of tests that
favors control testers is greater than the proportion that favors
protected testers. The difference in the percentages between
outcomes 3 and 4 represents the net difference in outcomes.
The value of the net difference is what is assessed in the
hypothesis test. The hypothesis is declared formally in the
following equations.
H
0
: %
3
= %
4
or %
3
– %
4
= 0.
H
A
: %
3
> %
4
or %
3
– %
4
> 0.
Measuring Discrimination
In this study, discrimination was estimated separately by test
mode (e-mail, telephone, and in person) for each disability
group. The measure of discrimination is expressed as—
D = p
10
p
01
.
In this expression, p
10
is the proportion of pairs in which
the control applicant receives a favorable outcome and the
applicant with disabilities receives an unfavorable outcome,
and p
01
is the proportion of pairs in which the control applicant
receives a negative outcome and the applicant with disabilities
receives a positive outcome. The standard error of D is—
=
n
n
10
+ n
01
p
10
– p
01
n
SE (D)
=
n
n
10
+ n
01
n
10
+ n
01
n
10
+ n
01
(n
10
n
01
)
( |n
10
n
01
| – 1)
p
10
– p
01
n
D
X
1
Z
c
=
±
DZ
c
±
=
2
2
2
X
1
=
2
,
where n is the total number of pairs. Given that D is approx-
imately normally distributed, we may compute confidence
intervals using—
=
n
n
10
+ n
01
p
10
– p
01
n
SE (D) =
n
n
10
+ n
01
n
10
+ n
01
n
10
+ n
01
(n
10
n
01
)
( |n
10
n
01
| – 1)
p
10
– p
01
n
D
X
1
Z
c
=
±
DZ
c
±
=
2
2
2
X
1
=
2
,
where Z
c
is the appropriate critical value of the standard normal
distribution.
The test statistic for McNemar’s Test is—
=
n
n
10
+ n
01
p
10
– p
01
n
SE (D) =
n
n
10
+ n
01
n
10
+ n
01
n
10
+ n
01
(n
10
n
01
)
( |n
10
n
01
| – 1)
p
10
– p
01
n
D
X
1
Z
c
=
±
DZ
c
±
=
2
2
2
X
1
=
2
.
In this expression, n
10
is the number of pairs in which the con-
trol tester receives a favorable outcome and the protected tester
receives an unfavorable outcome, and n
01
is the number of pairs
in which the control tester receives an unfavorable outcome and
the protected tester receives a favorable outcome. Under the null
hypothesis of no discrimination, with a sufficiently large number
of discordant samples (n
10
and n
01
), the test statistic has an
asymptotic chi-squared distribution with one degree of freedom.
If either n
10
or n
01
is small (n
10 +
n
01
< 25), then an exact binomial
test can be used where n
10
is compared to the binomial distribution
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with size parameter n = n
10
+ n
01
and probability 0.5.
The
binomial exact p-value can be approximated with the following
continuity-corrected version of McNemar’s Test.
=
n
n
10
+ n
01
p
10
– p
01
n
SE (D) =
n
n
10
+ n
01
n
10
+ n
01
n
10
+ n
01
(n
10
n
01
)
( |n
10
n
01
| – 1)
p
10
– p
01
n
D
X
1
Z
c
=
±
DZ
c
±
=
2
2
2
X
1
=
2
.
The test statistic has an asymptotic chi-squared distribution
with one degree of freedom. In this study, a one-tailed version
of this test was done by dividing the two-tailed p-value from the
chi-squared or exact binomial test by 2. The estimates of inci-
dences of discrimination are provided at 99-, 95-, and 90-percent
levels of significance by protected subclass (MI or I/DD).
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Findings of Incidence of Discrimination
This section presents the data generated by the three testing
modes (e-mail, telephone, and in person) and summarizes
findings from the tests using the dimensions described in the
previous section to determine the incidence of discrimination
identified in each mode.
Data Reliability and Limitations
Each mode of testing is examined by different dimensions of
discrimination. In cases for which the matched-pair sample
size was sufficient, data were further cross-tabulated by (1)
market size, (2) Olmstead status (that is, whether the pair was
in a state with an Olmstead Plan or Olmstead-related litigation),
(3) type of disability (MI or I/DD), (4) gender, and (5) race.
33
E-mail Testing Findings
The analysis of the e-mail tests focused on the differences in
the responses of housing providers to people with MD (MI and
I/DD samples combined = protected class) compared with peo-
ple without disabilities (control) across the following indicators
on two different levels.
1. Level 1 (applicable to administered tests in which both
testers sent an e-mail in inquiry; n = 359).
• Did each tester receive a response to his or her
inquiry (favorable)?
2. Level 2 (applicable only to completed tests in which both
testers received a response; n = 91).
• Were both testers told the advertised unit is available
(favorable)?
• Were both testers invited to inspect the unit (favorable)?
• Was the unit available and, if not, were both testers
given a reason for the unit not being available (favor-
able)?
• Were both testers advised to call the housing provider
(favorable)?
• Were protected testers asked to provide additional
information regarding their qualifications as an appli-
cant (not favorable)?
• Were protected testers reminded about qualifications
they must possess to rent the unit (not favorable)?
• Were protected testers encouraged to look at a differ-
ent unit owned by the same landlord instead of the
unit advertised (not favorable)?
The first step in the statistical analysis was to determine whether
testers from the control group were more likely to receive a
response to the initial inquiry than their matched protected
testers. Figure 2 summarizes the number and distribution of
e-mail responses versus nonresponses to the initial rental inqui-
ries from testers both with and without MD. Of the 359 tests
administered, only 91 tests (25 percent) resulted in responses
to both testers in the pair, and, in 172 tests (48 percent), neither
tester received a response. Thus, in 73 percent of the e-mail
tests, the control and protected group received equal treatment.
Table 21 presents the results of this first level of analysis. As
shown, people with MD (MI and I/DD combined) were signifi-
cantly less likely to receive any response back to their rental
inquiry via e-mail (17.55 percent of tests favored the control
class compared with 9.19 percent that favored the protected
class). The difference in these two percentages captures the net
measure of preferential treatment given to the control testers
Table 21. Differential Treatment in Response Received for Renters With MD (I/DD+MI) Found in E-mail Testing
Test Dimension
Both
Testers
(%)
Neither
Tester
(%)
Control
Tester
Only
(%)
Protected
Tester
Only
(%)
Net
Measure
p-Value
Sample
Size
(n)
Which tester(s) received a response to their e-mail? 25.35 47.91 17.55 9.19 8.36*** 0.0011 359
I/DD = intellectual or developmental disability. MD = mental disability. MI = mental illness.
*** Significant at the .01 level.
33
Throughout the Findings of Incidence of Discrimination section, in the event the sample size or matched-pair data available were not sufficient to yield conclusive
statistical results, this limitation is documented and indicates the need for additional testing with larger sample sizes in the future.
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(8.36 percent).
34
This positive net measure (8.36 percent)
suggests that people with MD (MI and I/DD combined) were
significantly less likely to receive a response back to their rental
inquiry and that a greater percentage of people in the control
group were favored. Moreover, the resulting p-value indicates
that the difference in treatment between control and protected
classes is significant.
A second level of analysis considers several dimensions of the
response to the different testers, and thus only those tests in
which both testers within a pair received a response (n = 91,
or 25 percent of the administered tests) can be included in the
analysis. Table 22 demonstrates that of the 91 tests in which
both the control tester and the paired protected tester received
a reply, protected testers identifying as having MD were less
likely to be forwarded to a housing provider to make an ap-
pointment or to see the unit (7.69 percent favored the control
class compared with 0.00 percent that favored the protected class).
As described in the Sampling Methods section, the protected
tester identified himself or herself as an individual with either
MI or I/DD. Figure 3 represents the response rates of the 183
paired e-mail tests that were conducted by protected testers
identifying as a person with MI.
Table 23 documents the results of the first level analysis to
determine whether testers from the control group were more
likely to receive a response to the initial inquiry than their
matched protected tester. Of the 183 paired tests completed in
which the protected testers revealed that they were people with
MI (as opposed to I/DD), only 42 (22.95 percent) of the tests
resulted in responses to both testers in the pair, and 93 (50.82
percent) of the tests resulted in no response to either tester.
Figure 3. Response Rates of E-mail Paired Tests for
Protected Testers Identifying as a Person With MI
No response from provider
n = 93
Some response from provider
n = 90
Total MI tests conducted
n = 183
Control
tester
received a
response
n = 79
Only control
tester
received a
response
n = 37
Both
tester
received a
response
n = 42
Only
protected
tester
received a
response
n = 11
Protected
tester
received a
response
n = 53
MI = mental illness.
Thus, in 74 percent of the e-mail tests for which the tester
revealed MI, the control and protected groups received similar
treatment. If the responses were different within test pairs,
however, control testers were favored at a rate of 20.22 percent
compared with only 6.01 percent for the protected testers. The
resulting net measure of 14.21 percent and p-value of 0.0001
demonstrate that these differences are statistically significant.
Table 22. Summary of Differential Treatment of Renters With MD (I/DD+MI) Found in E-mail Testing
Test Dimension
Both
Testers
(%)
Neither
Tester
(%)
Control
Tester
Only
(%)
Protected
Tester
Only
(%)
Net
Measure
p-Value
Sample
Size
(n)
Unit available 28.57 56.04 8.79 6.59 2.20 0.3953 91
Invited to inspect 72.94 11.76 7.06 8.24 – 1.18 0.5000 85
a
Given reason for unit not available 28.57 53.85 8.79 8.79 0.00 0.5000 91
Contact housing provider 41.76 50.55 7.69 0.00 7.69*** 0.0078 91
Asked for additional qualification information 96.70 2.20 1.10 0.00 1.10 0.5000 91
Reminded about qualifications to rent 95.60 3.30 1.10 0.00 1.10 0.5000 91
Encouraged to look at different unit than one advertised 6.59 93.41 0.00 0.00 0.00 NA 91
I/DD = intellectual or developmental disability. MD = mental disability. MI = mental illness. NA = test statistics cannot be produced due to no
observations in both discordant pairs.
*** Significant at the .01 level.
a
The sample size of 85 is due to the lack of response data for one of the pairs involved for this particular test dimension. The set of pairs without
comparable responses cannot be used in the analysis.
34
A positive net difference (control – protected net difference) means a greater percentage of people in the control class were favored, whereas a negative net differ-
ence would have meant a greater percentage of people in the protected class were favored. The p-value shows whether differences noted were significant and, if so, at
what level.
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Table 23. Differential Treatment in Response Received for Renters With MI Found in E-mail Testing
Test Dimension
Both
Testers
(%)
Neither
Tester
(%)
Control
Tester
Only
(%)
Protected
(MI) Tester
Only
(%)
Net
Measure
p-Value
Sample
Size
(n)
Which tester(s) received a response to their e-mail? 22.95 50.82 20.22 6.01 14.21*** 0.0001 183
MI = mental illness.
*** Significant at the .01 level.
Because only 42 completed tests received responses from the
housing provider to both the control and the protected (MI)
testers, subsequent indicators of favorable or unfavorable treat-
ment could be analyzed using only these 42 tests. The results
summarized in Table 24 of the second level analysis show that
people with MI, when compared with the control tester, were
less likely to be referred to the housing provider to actually see
the unit or to make an appointment to do so.
When these same analyses were conducted on the set of com-
pleted tests in which protected testers identified themselves as
people with I/DD rather than people with MI, no significant
differences were observed between the treatment of the
protected and control testers. This finding suggests potentially
different treatment of people by diagnosis or type of MD.
Differences in treatment were also noted based on other
factors. Despite small sample sizes, notable trends were shown
in the following areas.
• Size of market—In the very large markets, people with
MD were less likely to receive a reply to their inquiries
and less likely to be forwarded to a housing provider to set
up an appointment to see the advertised unit than in other
size markets. This lower level of response in Chicago and
Washington, D.C., was noted particularly with respect to
people with MI.
• Gender—Both men and women with MI were less likely
to receive a reply to their inquiries relative to paired
control testers, but unfavorable findings were higher in
significance for men (significant at the .001 level for men
compared with the .017 level for women). To the contrary,
treatment differences based on gender were not found for
testers identifying as having an I/DD.
• Current living situation (whether the person was living
in a community or institutional setting before the
rental request)—Overall, protected testers with MD were
less likely to receive a reply to their e-mail inquiries than
were control testers. Between the two different scenarios
presented by the protected testers—either moving from
an institutional setting (Olmstead) or moving from a family
home or other community setting (non-Olmstead)—protected
testers who indicated they were moving from an institutional
setting were even less likely to receive a response to their
request (significant at the .004 level for Olmstead versus the
.090 level for non-Olmstead).
Reasonable Accommodation Requests
via E-mail
Within the total pool of 359 attempted e-mail tests, 78 paired
tests included a specific request from the protected tester for a
reasonable accommodation (the control tester in the pair did
not make a reasonable accommodation request). These rea-
sonable accommodation requests, such as use of an assistance
animal or the need for verbal reminders to pay rent at a certain
time, were designed to relate directly to people with MD. Of
the 78 housing providers who received e-mail inquiries that
Table 24. Summary of Differential Treatment of Renters With MI Found in E-mail Testing
Test Dimension
Both
Testers
(%)
Neither
Tester
(%)
Control
Tester
Only
(%)
Protected
(MI) Tester
Only
(%)
Net
Measure
p-Value
Sample
Size
(n)
Unit available 21.43 61.90 9.52 7.14 2.38 0.5000 42
Invited to inspect 70.00 5.00 12.50 12.50 0.00 0.5000 40
Given reason for unit not available 21.43 59.52 9.52 9.52 0.00 0.5000 42
Contact housing provider 45.24 45.24 9.52 0.00 9.52* 0.0625 42
Asked for additional qualification information 100.00 0.00 0.00 0.00 0.00 NA 42
Reminded about qualifications to rent 95.24 4.76 0.00 0.00 0.00 NA 42
Encouraged to look at different unit than one advertised 4.76 95.24 0.00 0.00 0.00 NA 42
MI = mental illness. NA = test statistics cannot be produced due to no observations in both discordant pairs.
* Significant at the .10 level.
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included a reasonable accommodation request, only 39 (50
percent) sent e-mail responses back to the protected testers. Of
those housing providers who did respond, roughly 15 percent
were willing to grant the requested accommodation.
Table 25 summarizes the results of the tests requesting a
reasonable accommodation. Only 6 of the 39 housing pro-
viders who responded (15.384 percent) responded favorably
to the reasonable accommodation request.
35
An additional 3
housing providers (7.69 percent) responded to the request for
a reasonable accommodation but in an unfavorable manner,
either by stating that they were not willing to provide the
requested accommodation or by giving a more ambiguous
reply that left the impression that the request for a reasonable
accommodation was not likely to be approved. The remaining
30 responding housing providers simply did not address the
request for a reasonable accommodation. These housing pro-
viders’ avoidance of addressing the reasonable accommodation
request was considered to be unfavorable treatment.
Table 25. Summary of Reasonable Accommodation
Requests by Testers With MD Found in E-mail Testing
Type of
Disability
Reasonable Accommodation Requests
Response
Received
Willing To
Provide (n)
Willing To
Provide (%)
MI 21 3 14.29
I/DD 18 3 16.67
Total 39 6 15.384
I/DD = intellectual or developmental disability. MD = mental disability.
MI = mental illness.
Overall, the vast majority of people with MD making an e-mail
request for a reasonable accommodation (84.6 percent) were
denied their request outright or were left, on their own, to
determine how to pursue their request or to appeal a housing
provider’s denial.
Additional qualitative analyses of e-mail replies to accommoda-
tion requests are provided in Appendix A, Qualitative Analyses
and Findings on Overt and Subtle Discrimination Against
People With Mental Disabilities by Different Testing Modes.
Telephone Testing Findings
This section summarizes findings from the telephone testing to
measure discrimination against people with MD as they seek
rental housing. Responses to tester inquiries were analyzed by
assessing the following responses to testers.
• Were both testers told the advertised unit is available
(favorable)?
• Were both testers invited to inspect the unit (favorable)?
• Was the unit available and, if not, were both testers given a
reason for the unit not being available (favorable)?
• Were protected testers asked to provide additional
information regarding their qualifications as an applicant
(not favorable)?
• Were protected testers reminded about qualifications they
must possess to rent the unit (not favorable)?
• Were protected testers encouraged to look at a different
unit owned by the same landlord than the unit advertised
(not favorable)?
Analyses focus on differences in treatment between people with
MD (MI and I/DD) and control testers without disabilities. As
shown in Table 26, no significant difference was identified with
respect to whether potential renters with or without MD are told
whether an advertised unit is available, although the trend sug-
gests that people with MD are less likely to be told an advertised
Table 26. Summary of Differential Treatment of Renters With MD Found in Telephone Testing
Test Dimension
Control
Tester Only
(%)
Protected
Tester Only
(%)
Net
Measure
p-Value
Sample Size
(n)
Unit available 6.59 4.94 1.65 0.1050 668
Invited to inspect 21.26 16.47 4.79** 0.0219 668
Given reason for unit not available 5.39 5.39 0.00 0.5000 668
NOT asked for additional qualification information 19.71 20.99 – 1.28 0.33085 629
NOT reminded about qualifications to rent 16.18 24.76 – 8.58 0.0004
a
618
NOT encouraged to look at different unit than one advertised 7.78 4.79 2.99** 0.0188 668
MD = mental disability.
** Significant at the .05 level.
a
The null hypothesis is not rejected as test statistics indicate significance in the other direction.
35
The testing demonstrated slightly higher levels of willingness to provide accommodations for people with I/DD (16.7 percent) versus people with MI (14.3 percent).
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unit is available than people without disabilities (p = .105).
People with MD (both I/DD and MI), however, were treated
significantly less favorably in two ways.
1. Protected testers were less likely to be invited to inspect an
advertised unit.
2. Protected testers were more likely to be steered to a
different unit than the one advertised, even when the
advertised unit was available.
Additional instances of significant differences in treatment
were found during telephone testing when the tests were ana-
lyzed based on the type of disability revealed by the protected
tester. As shown in Table 27, when specifically looking at the
sample of testers with MI (n = 357), testers with MI were—
• Significantly less likely to be told an advertised unit was
available than the control tester.
• Significantly less likely to be invited to inspect an advertised
unit and significantly more likely to be forwarded to a
different unit than the one advertised, even when the
advertised unit was said to be available.
36
• Significantly more likely to be asked to provide additional
information about their qualifications.
• Significantly more likely to be sent ambiguous signs of
rentals not being available.
37
Analysis of the tests conducted for people with I/DD (n = 311),
revealed a significant unfavorable difference in that people with
I/DD were more likely to be forwarded to a different unit than
the one advertised, even when the advertised unit was said to
be available (Table 28). This finding suggests that people with
I/DD are being steered toward a specific building, wing, or area
within a property.
Table 27. Summary of Differential Treatment of Renters With MI Found in Telephone Testing
Test Dimension
Control
Tester Only
(%)
Protected (MI)
Tester Only
(%)
Net
Measure
p-Value
Sample Size
(n)
Unit available 7.56 4.48 3.08** 0.0467 357
Invited to inspect 19.61 14.01 5.60** 0.0339 357
Given reason for unit not available 5.60 5.04 0.56 0.3728 357
NOT asked for additional qualification information 22.87 17.68 5.19* 0.0702 328
NOT reminded about qualifications to rent 15.63 25.00 – 9.37 0.0043
a
320
Sent ambiguous sign of availability 7.56 5.04 2.52* 0.0899 357
NOT encouraged to look at different unit than one advertised 7.28 4.20 3.08** 0.0429 357
MI = mental illness.
* Significant at the .10 level. ** Significant at the .05 level.
a
The null hypothesis is not rejected as test statistics indicate significance in the other direction.
Table 28. Summary of Differential Treatment of Renters With I/DD Found in Telephone Testing
Test Dimension
Control
Tester Only
(%)
Protected (I/DD)
Tester Only
(%)
Net
Measure
p-Value
Sample Size
(n)
Unit available 5.47 5.47 0.00 0.5000 311
Invited to inspect 23.15 19.29 3.86 0.1481 311
Given reason for unit not available 5.14 5.79 – 0.65 0.3658 311
NOT asked for additional qualification information 16.28 24.58 – 8.30 0.0121 301
NOT reminded about qualifications to rent 16.78 24.50 – 7.72 0.0190 298
Sent ambiguous sign of availability 5.47 5.47 0.00 0.5000 311
NOT encouraged to look at different unit than one advertised 8.36 5.47 2.89* 0.0850 311
I/DD = intellectual or developmental disability.
* Significant at the .10 level.
36
This finding suggests that people with MI are being steered toward a different building or a specific wing or area within a building.
37
See Appendix A: Qualitative Analyses and Findings on Overt and Subtle Discrimination Against People With Mental Disabilities by Different Testing Modes, for
examples of this subtle discrimination.
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Telephone testing revealed that people with MI and I/DD
were less likely to be reminded about qualifications or asked to
provide additional information about their qualifications than
people without disabilities.
38
Further testing and qualitative
debriefing of housing providers would be needed to determine
whether this indicator is favorable or unfavorable.
The following differences by size of market, gender, and previous
living status were also observed as trends in telephone testing.
• Size of market—People with both MI and I/DD were
treated less favorably in large- and medium-sized markets,
as compared with very large markets, in several areas,
including (1) they were less likely to be told an advertised
unit is available, (2) they were less likely to be invited to
inspect that unit, and (3) they were encouraged more to
look at a different unit than the one advertised.
• Gender—By contrast with e-mail findings, in telephone
testing, women with MI were (1) less likely to be invited in
to view the unit (22.70 percent of tests favored control-group
women compared with 6.38 percent that favored women
with MI; p = .0002), (2) less likely to be asked to provide
additional information regarding their qualifications as an
applicant (32.14 percent favored control-group women
compared with 11.43 percent that favored women with
MI; p = .0001), and (3) more likely to be encouraged
to look at a different unit owned by the same landlord
(14.18 percent favored control-group women compared
with 7.09 percent that favored in women with MI; p = .034).
Men with MI were less likely to be asked about qualifica-
tions or any additional information than women with MI.
Significant gender differences were not found for people
with I/DD.
• Current living situation—Protected testers who indicat-
ed to the housing provider that they had been living in an
institutional setting before renting (Olmstead) were (1) less
likely to receive a reply to their inquiries, (2) less likely
to be invited to inspect a unit, and (3) more encouraged
to look at a different unit than the one advertised, when
compared with the protected testers who reported to
providers that they were living in a family home or
community-based settings before renting (non-Olmstead).
Reasonable Accommodation Requests
via Telephone
During telephone testing, if protected testers were invited to see
a unit, a request for a reasonable accommodation was made. A
total of 629 telephone tests included a request for a reasonable
accommodation from the protected tester. Table 29 summarizes
the results of the responses to these requests.
Table 29. Summary of Reasonable Accommodation
Requests by Testers With MD Found in Telephone
Testing
Type of
Disability
Reasonable Accommodation Requests
Response
Received
Willing To
Provide (n)
Willing To
Provide (%)
MI 339 187 55.16
I/DD 290 185 63.79
Total 629 372 59.14
I/DD = intellectual or developmental disability. MD = mental disability.
MI = mental illness.
By contrast with findings from the e-mail tests (in which only
15.384 percent of housing providers expressed willingness
to provide a reasonable accommodation when asked), 59.14
percent of the housing providers who were asked to provide
reasonable accommodations during telephone testing stated
that they would be willing to make the accommodation or
would view the request favorably given disclosure of the
disability. This finding may indicate that housing providers
are more likely to engage in a conversation and openly discuss
accommodations on the telephone than in an e-mail. Telephone
testing still showed a significant percentage of accommodation
requests that were not accepted (40.86 percent), however. The
remaining housing providers either stated outright that they
were not willing to provide the accommodation or gave more
ambiguous replies that more subtly pointed toward a negative
decision.
39
Thus, a large percentage of people with MD (40.86
percent) were denied their request for a reasonable accommo-
dation or left to figure out how to pursue that request on their
own given negative input in response to their request.
In addition, reasonable accommodation response rates differed
by type of disability (see Table 29), revealing that a higher
percentage of housing providers were willing to provide
38
This finding may suggest a favorable finding that housing providers know not to ask these types of questions, or it may suggest unfavorable treatment in that
housing providers may be less likely to ask for any detailed rental information from applicants with MI and I/DD after having already shown less chance of inviting
them to see or inspect a unit.
39
For example, many housing providers or their agents stated that they did not think the owner would allow the requested accommodation or that it was unlikely
the request would be considered, and they said that the applicant would need to find and call a representative at the housing provider to verify this information but
did not give any contact information to do so.
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accommodations to people with I/DD (63.79 percent) than
to people with MI (55.16 percent). Requests for a reasonable
accommodation were also more likely to be considered and
granted in large markets (65.7 percent) and medium markets
(66.7 percent) than in very large markets (47.4 percent) or
small markets (41.9 percent). This analysis again produced
a higher acceptance rate for people with I/DD than with MI,
regardless of market size.
Table 30 summarizes the varying levels of affirmative
responses to requests for reasonable accommodations within
different- sized markets tested. Given small sample sizes tested,
particularly in smaller city markets, results are limited to show-
ing only potential trends. This limit demonstrates the need for
larger-scale testing to determine significant differences between
metropolitan statistical areas based on market size.
Additional qualitative analyses of telephone responses to
requests for reasonable accommodations are provided in
Appendix A, Qualitative Analyses and Findings on Overt and
Subtle Discrimination Against People With Mental Disabilities
by Different Testing Modes.
Table 30. Summary of Reasonable Accommodation Request Responses by Specific Markets
Type of
Disability
Counts
Willing To
Accommodate
(%)
99% C.I. 95% C.I. 90% C.I.
Total
Requested
Willing To
Accommodate
Lower
(%)
Upper
(%)
Lower
(%)
Upper
(%)
Lower
(%)
Upper
(%)
Chicago-Joliet-Naperville, IL-IN-WI
MI 55 18 32.7 16.4 49.0 20.3 45.1 22.3 43.1
I/DD 46 21 45.7 26.7 64.6 31.3 60.0 33.6 57.7
MI+ I/DD 101 39 38.6 26.1 51.1 29.1 48.1 30.6 46.6
Washington-Arlington-Alexandria, DC-VA-MD-WV
MI 51 24 47.1 29.1 65.1 33.4 60.8 35.6 58.6
I/DD 42 29 69.0 50.7 87.4 55.1 83.0 57.3 80.8
MI+ I/DD 93 53 57.0 43.8 70.2 46.9 67.1 48.5 65.4
Nashville-Davidson--Murfreesboro--Franklin, TN
MI 53 35 66.0 49.3 82.8 53.3 78.8 55.3 76.7
I/DD 53 37 69.8 53.6 86.1 57.5 82.2 59.4 80.2
MI+ I/DD 106 72 67.9 56.2 79.6 59.0 76.8 60.5 75.4
Cincinnati-Middletown, OH-KY-IN
MI 75 48 64.0 49.7 78.3 53.1 74.9 54.9 73.1
I/DD 55 35 63.6 46.9 80.3 50.9 76.3 53.0 74.3
MI+ I/DD 130 83 63.8 53.0 74.7 55.6 72.1 56.9 70.8
Albuquerque, NM
MI 26 19 73.1 50.7 95.5 56.0 90.1 58.8 87.4
I/DD 23 18 78.3 56.1 100.0 61.4 95.1 64.1 92.4
MI+ I/DD 49 37 75.5 59.7 91.3 63.5 87.6 65.4 85.6
Fresno, CA
MI 27 17 63.0 39.0 86.9 44.7 81.2 47.7 78.2
I/DD 24 21 87.5 61.3 98.5 67.6 97.3 70.8 96.5
MI+ I/DD 51 38 74.5 58.8 90.2 62.5 86.5 64.5 84.5
Harrisburg-Carlisle, PA
MI 28 14 50.0 25.7 74.3 31.5 68.5 34.5 65.5
I/DD 25 14 56.0 30.4 81.6 36.5 75.5 39.7 72.3
MI+ I/DD 53 28 52.8 35.2 70.5 39.4 66.3 41.6 64.1
New Haven-Milford, CT
MI 10 6 60.0 19.1 92.3 26.2 87.8 30.4 85.0
I/DD 5 3 60.0 8.3 97.7 14.7 94.7 18.9 92.4
MI+ I/DD 15 9 60.0 27.4 92.6 35.2 84.8 39.2 80.8
Syracuse, NY
a
MI 17 7 41.2 10.4 71.9 17.8 64.6 21.5 60.8
I/DD 14 6 42.9 8.8 76.9 16.9 68.8 21.1 64.6
MI+ I/DD 31 13 41.9 19.1 64.8 24.6 59.3 27.4 56.5
C.I. = confidence interval. I/DD = intellectual or developmental disability. MI = mental illness.
a
Added after a potential detection issue was discovered in New Haven-Milford, CT.
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In-Person Testing Findings
This section summarizes findings from in-person testing to
measure discrimination against people with and without MD
as they seek rental housing. Key questions that form the basis
for analysis include—
• Were both testers told the advertised unit is available
(favorable)?
• Was the unit available and, if not, were both testers given
a reason for the unit not being available (favorable)?
• Were protected testers asked to provide additional
information regarding their qualifications as an applicant
(not favorable)?
• Were protected testers reminded about qualifications they
must possess to rent the unit (not favorable)?
• Were protected testers encouraged to look at a different
unit owned by the same landlord than the unit advertised
(not favorable)?
The first analysis focuses on differences between testers with
MD (MI and I/DD samples combined) and testers without
disabilities. As shown in Table 31, people with MD were sig-
nificantly less likely than people without disabilities to be told
that the advertised unit was available (5.94 percent favoring
the control tester compared with 0.99 percent favoring the
protected tester) and were less likely to be given a valid reason
for why the unit was not available (3.96 percent favoring
the control tester compared with 0.00 percent favoring the
protected tester). No other significant differences in treatment
were identified during the in-person testing.
The sample size varies if data were missing or not available for
one of the matched pairs; only balanced matched-pair data
were analyzed.
As in the other modes of testing, when additional characteristics
of testers were considered in the analysis, evidence of differ-
ential treatment based on disability type, current living status,
region, and gender were observed.
As shown in Table 32, people with MI were less likely to be
told that an advertised unit is available (8 percent of tests
favored the control group compared with 0 percent that favored
the MI group) during in-person testing.
No significant differences in treatment were found between tes-
ters with I/DD and control testers without MD (see Table 33).
The following additional differences by gender, race, and living
situation were also found to be significant in in-person testing.
• Gender—Women with MI were less likely to be told
an advertised unit was available (11.43 percent of tests
favored women without disabilities compared with 0
percent that favored women with MI; p = .06) and more
likely to be encouraged to look at a different unit than
the one available (20 percent favored women without
disabilities compared with 5.71 percent that favored in
women with MI; p = .09) during the in-person testing.
Table 31. Summary of Differential Treatment of Renters With MD Found in In-Person Testing
Test Dimension
Control
Tester Only
(%)
Protected
Tester Only
(%)
Net
Measure
p-Value
Sample Size
(n)
Unit available 5.94 0.99 4.95* 0.0625 101
Given reason for unit not available 3.96 0.00 3.96* 0.0625 101
NOT asked for additional qualification information 16.49 21.65 – 5.16 0.2055 97
NOT reminded about qualifications to rent 18.75 19.79 – 1.04 0.4347 96
NOT encouraged to look at different unit than one advertised 12.87 12.87 0.00 0.5000 101
MD = mental disability.
* Significant at the .10 level.
Table 32. Summary of Differential Treatment of Renters With MI Found in In-Person Testing
Test Dimension
Control
Tester Only
(%)
Protected (MI)
Tester Only
(%)
Net
Measure
p-Value
Sample Size
(n)
Unit available 8.00 0.00 8.00* 0.0625* 50
Given reason for unit not available 4.00 0.00 4.00 0.2500 50
NOT asked for additional qualification information 17.02 25.53 – 8.51 0.2517 47
NOT reminded about qualifications to rent 18.75 20.83 – 2.08 0.5000 48
NOT encouraged to look at different unit than one advertised 16.00 6.00 10.00 0.1133 50
MI = mental illness.
* Significant at the .10 level.
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Table 33. Summary of Differential Treatment of Renters With I/DD Found in In-Person Testing
Test Dimension
% Tester Favored
Control
Tester Only
(%)
Protected (MI)
Tester Only
(%)
Net
Measure
p-Value
Sample Size
(n)
Unit available 3.92 1.96 1.96 0.5000 51
Given reason for unit not available 3.92 0.00 3.92 NA 51
NOT asked for additional qualification information 16.00 18.00 – 2.00 0.5000 50
NOT reminded about qualifications to rent 18.75 18.75 0.00 0.5000 48
NOT encouraged to look at different unit than one advertised 9.80 19.61 – 9.81 0.1509 51
I/DD = intellectual or developmental disability. NA = test statistics cannot be produced due to no observations in control, protected, or both groups.
Such observations were not made for men (for additional
qualitative analyses of the content of these responses, see
appendix A).
• Race—Although sample sizes and matched-pair data were
too small to be conclusive to analyze most differences,
African-Americans with MI were less likely to be told
an advertised unit was available (9.76 percent favored
African-Americans without disabilities compared with
0.00 percent that favored African-Americans with MI;
p = .06) than African-American control testers.
• Current living situation—Testers with MI who identified
as living in a nursing home or institution before renting
(Olmstead group) were less likely to be told an advertised
unit was available (13.33 percent favored people without
disabilities compared with 0.00 percent that favored peo-
ple with MI living in nursing homes; p = .06) and trending
toward more likely to be encouraged to look at a different
unit (23.33 percent favored people without disabilities
compared with 6.67 percent that favored people with MI
living in nursing homes; p = .09). No significant findings
were observed in test results for applicants with I/DD who
identified as living in large group homes versus with family
before renting.
In addition to the analysis of these quantitative findings, all
qualitative field notes and examples from in-person testing
were analyzed for additional overt and subtle indications of
discrimination. An innovative mixed-methods approach was
used for analyzing these qualitative data, which yielded rich
descriptive findings on additional areas of potential discrimina-
tion that were not measured in the quantitative analyses. These
qualitative methods and findings are summarized separately in
appendix A, Qualitative Analyses and Findings on Overt and
Subtle Discrimination Against People With Mental Disabilities
by Different Testing Modes.
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Findings From the Evaluation of Different Testing Modes
Two primary objectives of this study were to (1) develop
and implement different testing methods and approaches for
measuring housing discrimination on the basis of MD and
(2) evaluate the strengths and weaknesses of each approach,
to establish a set of protocols for conducting paired testing
to measure the degree to which people with MD experience
discrimination in the search for rental housing. This section
of the report evaluates the three testing methods implemented
over the course of this research effort, focusing on the unique
aspects of implementing paired testing with, and on behalf of,
people with MD.
DDS 2005 explored the development of methodologies to test
for housing discrimination on the basis of MD and served as
a starting point for developing the research approach for this
study. The final report from DDS 2005 provided the study team
with a set of considerations when employing people with MD
as testers and also provided some insights on how to reveal
disability and how to construct parallel stories for paired testing.
This information was supplemented with a review of current
research on testing, insights from focus groups that included
people with MD, and guidance from the study’s expert panel to
develop the testing protocols implemented in this project.
People With Disabilities As Testers: Is
It Feasible?
HUD, the study team, the expert panel, and focus groups
strongly supported the participation of people with MD
throughout the project, both as advisors and as testers.
Although the recommendations of DDS 2005 indicated such
an approach was feasible for in-person testing, the report also
noted the potential difficulty of recruiting a sufficient number
of testers with MD and the concern that the effectiveness of the
testers might decline if too many tests were conducted within
a given time period. With these concerns in mind, people with
MD were engaged early in the planning process to help design
the testing protocols and to participate in the testing process.
The study team sought to balance the equally important
practical need to produce credible results in a reasonably short
period of time with the need to contain costs. This balance
imposed practical limitations on methodologies, but it also
supported the consideration of different approaches, both for
the benefit of the testers with MD and for the efficient execution
of the study.
The final research design included pilot testing that employed
people with and without MD as testers. People with MD
served exclusively as protected testers for the in-person testing,
completing each test accompanied by a companion without
MD, who was another trained tester posing as friend helping
in the search process. This testing design was based on the
recommendation of the expert panel, was confirmed by focus
groups that included people with MD as a reasonable strategy,
40
and replicated the approach of the 2005 DDS.
The conclusion reached by the study team, as discussed
subsequently, was that producing reliable fair housing test
results while working with individuals with MD—both MI and
I/DD—is feasible.
Tester Profile: How Do You Isolate
and Reveal Disability?
A key challenge to conducting matched-pair testing for housing
discrimination on the basis of MD is ensuring that the tester
can convincingly and unambiguously reveal the presence of
MD to a housing provider. Based on a review of the literature,
findings from focus groups, and discussions with the expert
panel, the following recommendations were made regarding (1)
the severity of a tester’s disability, (2) the disclosure-and-reveal
sequence, and (3) the profile of the tester.
Severity of Disability
After reviewing existing research on testing with this popula-
tion, and keeping in the spirit of the goals of the Fair Housing
Act and the Americans with Disabilities Act, the study team
determined not to restrict the type or severity of MD for testers,
other than being confident that the person with MD was able
to complete the assigned test. To make this determination, a
40
Focus groups noted that people with MD who brought along another person for support when searching for housing reported feeling safer and more comfortable
in the housing search process. Focus group respondents also noted that even when a companion was present, people with MD still experienced potential
discrimination by landlords. The expert panel, which also included people with MD, agreed that this approach would likely yield good data by having two people
to observe and record each test. The concern that the presence of a companion might affect or bias a test was discussed with the expert panel, and it was ultimately
determined that the effect of a companion accompanying the protected tester would likely be minimal.
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verification process was used that was equivalent to seeking
informed consent when enrolling a research subject. For
this project, tester candidates were required to be their own
guardian and be capable of giving the equivalent of informed
consent, recognizing that this restriction would likely reduce
the pool of potential MI and I/DD testers. The research team
then ensured that the candidate understood what was expected
of him or her and could repeat the requirements back to
research team member. The ultimate goal was to ensure that
all testers were able to fully execute the test, including the
reporting requirements after the test, not only at the time of
recruitment but also on the day of each scheduled test. To
this end, the recruitment, interview, and training process was
critical for successful testing involving people with MD.
Revealing Disability
Several challenges were identified as being inherent in testing
for housing discrimination on the basis of MD.
• Unlike other housing discrimination research studies,
which have focused on externally recognizable character-
istics, such as race and ethnicity, most MD is not visible or
immediately recognizable (Corrigan and Penn, 1999) and
therefore must be revealed during testing.
• Although many people with MD in the real world may
be reluctant or unwilling to reveal their disability, for the
purpose of these tests, the MD must be clearly, credibly,
and consistently disclosed to the housing provider or agent.
• Many people with MD have multiple or co-occurring
mental or physical disabilities; however, the testing design
can focus on only the single issue of the presence of MD.
• Although people with MD may disproportionately have
low incomes, profiles for both control and protected
testers had to depict them as income qualified for the
units they were seeking in order to avoid introducing
another variable into the tests.
Recognizing that the necessarily narrow design of the testing
implemented for the purposes of this research effort does not
represent the multiple and complex factors that affect the
typical experience of many people with MD during the housing
search process, different strategies were developed across the
three test modes to isolate the variable of interest in this project.
Because data are limited on testing for housing discrimination
against people with MD, the study team turned to recent
research on discrimination during the search for employment
for additional guidance for its disclosure strategies. Revealing
disability
41
during a job interview has parallels to the housing
search process; that is, some individuals may reveal the pres-
ence of a disability right at the start of the housing search pro-
cess, and others may hide their disability and continue to do so
after moving into a unit. The timing of disclosure of disability
during matched-pair testing was studied by Dalgin and Bellini
(2008)using a tester profile that contained a 9-month gap in
employment. In that study, the control testers with no disability
offered that they were taking care of their mother who had a
serious illness during that time. The testers with disabilities
disclosed that they had been ill and needed to take some time
off to deal with their own health concerns. Disclosure of the
specific nature of the health concern (that is, disability) then
occurred later when voluntarily shared by the candidate either
in a short or long response (that is, more or less detail). This
study determined that extensive information on disability does
not change the outcome, because no difference was evident in
response to the shorter version of disclosure. This approach
assured that the employer knew the applicant had MD early in
the interview process and then later received some additional
information about that disability.
The DDS 2005 exploratory testing grappled with how the
protected tester could reveal the presence of a disability to a
housing provider. For this project, it was generally agreed that,
although most people in this group would not typically disclose
their disability outright to a housing provider, it would be
credible to do so if the each tester disclosed while explaining
why they had no recent rental history. As a result, in all tests,
protected testers disclosed that their lack of rental history was
due to being in a mental health treatment facility (for people
with MI) or in a group home (for people with I/DD). Paired
control testers disclosed that they had either been a student
living in a dorm, had lived with family, or had lived abroad.
41
MacDonald-Wilson, et al. (2011:192) defined disclosure as “revealing information about one’s diagnostic label, mental health condition, or psychiatric disability”
and identify seven different types or reasons for disclosure.
1. Full disclosure—no one excluded from knowing.
2. Selective disclosure—to people whom the person trusts.
3. Strategically timed—after building trust over time; may or may not be full disclosure.
4. Targeted—condition of employment.
5. Nondisclosure—hide it from all.
6. Inadvertent—reveal instead of being “found out.”
7. Forced—something came up that required it (e.g., hospitalization).
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Another approach to revealing disability in testing is with a
request for a reasonable accommodation. Common accommoda-
tions requested can include assistance animals, variance of the
rent due date to accommodate the date of receipt of disability-
related income, request for a live-in aid, waiver of minimum
income or credit requirements, acceptance of rent from a
third- party payer, or agreement to communicate through a
case worker or family member.
42
Kaye (2012: 16) suggested
that “disclosure of a PD [psychiatric disability] through a
written accommodation request accompanying an application
can cause a housing applicant to be negatively stereotyped as
less capable than an applicant without a PD, despite similar
qualifications” and can increase likelihood of discrimination.
Establishing a Suitable Profile
A key concern in this project was to make the testing situation
as realistic as possible. This goal meant that the tester profiles
were required to align with the reality experienced by people
with MD but also to not trigger suspicion by the housing
provider or generate bias. The following was recommended.
• Type of disability—The specific type of disability was not
stated during a test. Instead, protected testers gave the
broad category of having either MI or I/DD and then revealed
more about functional aspects of the disability during the
interview (telephone or in-person) or in the e-mail.
• Visible characteristics—Race, gender, and age of test
pairs were driven by actual tester demographics but were
matched across pairs for all test types.
• Income—The income of each tester was established by
the study team and was in the range needed to afford the
unit being sought. Furthermore, testers did not claim SSDI or
any other disability-related income, nor did they indicate
that they were using a Housing Choice Voucher or any other
form of housing assistance. This condition was to eliminate
any potential bias based on source of income, which is a
protected class in some jurisdictions but not others.
• Employment—It was agreed that testers should be
working to eliminate concerns that unemployment might
be a source of bias for some housing providers. Being
employed, however, does not ensure sufficient income to
afford many apartments (using the “30 percent of income”
rule), therefore, control and protected testers’ profiles were
designed to include employment that realistically paid
enough to cover the rent at the property being tested.
Using the testing protocols described in previous sections, pro-
tected class testers were trained to reveal their disability in such
a way that it was unambiguous and could not be discredited
even if the protected tester did not “manifest symptoms.” The
approach taken in this study was, thus, full disclosure of MD in
all test modes by the individual acknowledging the presence of
a disability (1) directly (for example, “I have a mental disability”)
and (2) indirectly (for example, rental history). In some cases,
disability was also revealed by asking for a reasonable accom-
modation; however, such a request was made only after the first
two disclosure methods were completed and all information
required for the test to be considered complete was attained.
In all cases, the functional aspects of disability, rather than the
type of disability, were provided when disclosing any details.
Tester profiles were matched for consistency between the
protected tester and control tester. Similar backgrounds were
used to establish a similarity in rental history. The guidance for
testers with disabilities during in-person testing and proxies
during the telephone testing, and the exact language used in
e-mail testing, are presented subsequently.
E-mail Testing: Strengths and Weak-
nesses
E-mail testing is important given the growing use of this medi-
um for communication in the rental housing search process. As
a testing mode, it has several strengths when focusing on indi-
viduals with disabilities. It also has some limitations, including
the inability to interpret a nonresponse from a housing provider
and the effect such a nonresponse has on the overall set of
paired test results. One strategy for addressing this concern is
to enlarge the sample, or to oversample. This approach, too, can
also have drawbacks, however, especially in smaller markets
where increasing the sample size can also increase the risk of
test detection.
A key strength of e-mail testing is the elimination of potential
fatigue among testers, which was a particular concern raised in
the discussion of working with people with MD as testers. With
the e-mail as the “tester,” this mode also reduces human error
in reporting because it provides verbatim statements on both
sides of the transaction—each member of the tester pair and
the housing provider. This design allows for the message and
initial contact of the tester to be controlled, including when and
how the disability is revealed, thus ensuring consistency across
42
Kaye (2012: 31) suggested an additional reasonable accommodation request to reveal a PD by having “two applicants requesting that they can break lease with no
penalty, but one is asking in case of psychiatric hospitalization and the other is asking in case of military deployment.”
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all tests, which in turn can produce reliable and unambiguous
quantitative measures to determine if clear patterns of discrim-
ination exist against people with MD.
E-mail testing also provides data that allow for a more systematic
and specific analysis to find evidence of subtle discrimination.
Since passage of the FHA, researchers involved in paired
testing studies have observed that it is rare to find a “smoking
gun” of proof (Hanson, Hawley, and Taylor, 2011). E-mail
testing provides written data directly from a housing provider
that can then be used to more accurately assess the subtle nature
and extent of discrimination (Hanson, Hawley, and Taylor,
2011; HDLP, 2012).
Subtle discrimination may be used to discourage someone in
a protected class from pursuing a particular housing option.
It can also include more favorable treatment of the protected
class. For example, recent testing in Vermont involving in-person
testing of people with disabilities, including MD, found that
27 percent of the control testers were positively favored, but
neither protected nor control testers experienced outright dis-
crimination.
43
The e-mail data produced for this project were
coded and analyzed using qualitative methods, which found
evidence of (1) subtle discrimination against the protected
tester and (2) more overt differences in treatment that could
be categorized as discrimination (Hanson, Hawley, and Taylor
(2011). See Appendix A, Qualitative Analyses and Findings on
Overt and Subtle Discrimination Against People With Mental
Disabilities by Different Testing Modes for a more extensive
discussion of this topic.
This analysis also highlighted issues relating to the timing of
e-mails in testing, and particularly when the initial housing
inquiry e-mail was received and responded to. In this testing, it
could only be assumed from the e-mail time stamp that the order in
which an e-mail response was received by the testing team was
also the order in which it was read by the housing provider.
Although a new frontier in testing, this project confirms that
e-mail testing research can generate reliable results that, based
on statistical analysis of quantitative data, can be used to deter-
mine discrimination. These same data can be coded for both
quantitative and qualitative analysis to look systematically for
evidence of subtle forms of discrimination, which may be of use
in future testing efforts. Table 34 summarizes the pros and cons
of the e-mail method of testing.
Table 34. Pros and Cons of E-mail Testing
Pros Cons
Cost effective for a large number of tests. Captures only first point-of-contact step of housing search process.
Automated system generates predetermined script. No live interaction with housing provider.
Logistically straightforward. Many larger housing providers use canned, scripted replies regardless
of initial request—unclear whether provider is responding to the
disability component.
Test administrators, but no testers—eliminates tester fatigue and error. Potential for low response rate requires larger sample size.
Less time consuming than other modes (e-mail is the data so no report
forms or debriefing required).
Data are limited to the e-mail returned.
Provides exact language used by housing provider for analysis. Difficult to interpret nonresponses.
Telephone Testing: Strengths and
Weaknesses
The number of telephone tests that were completed,
including those tests that included a request for a reasonable
accommodation, exceeded the goals for this test mode. This
result demonstrates that telephone testing can produce a high
volume of tests for analysis in a relatively short period of time
and can be used successfully to produce useful data.
The telephone mode of testing also has its limitations, howev-
er, including—
• Testers have no face-to-face interaction with housing
providers, so interpreting responses to questions is based
solely on what people say over a telephone, which may be
different than if the conversation occurred in person.
• Compared with e-mail testing, telephone testing produces
detailed field notes to use in subsequent analysis. Although
a positive, it is also a negative because it requires additional
time for testers to produce their reports.
• The particular test design here, which used proxies, is not
the equivalent of actually speaking with a person with MI
or I/DD. The results, although valid and useful, may not be
as socially valid as using a person with MD to do the testing.
43
Housing Discrimination Law Project of Vermont Legal Aid (2012).
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Based on the successful use of testers with MD for in-person
testing as part of this project, the study team believes that it
would be feasible to conduct telephone testing that employs
people with MD to serve as protected testers, making calls and
requesting information about the apartment for themselves,
assuming that a strong commitment to training and oversight
is in place. As noted previously, the social validity of this testing
is likely to increase if people with disabilities are used in the
testing process to make telephone calls.
Table 35 summarizes the observed pros and cons of telephone
testing. As with e-mail testing, most of the issues are not unique
to testing for discrimination against people with MD.
Table 35. Pros and Cons of Telephone Testing
Pros Cons
Live interaction w/housing provider. No face-to-face interaction.
Use of proxy without a disability as friend or family member to conduct
test allows for more flexibility in recruiting, training, and scheduling
testers.
Not the equivalent of actually speaking to people with MI or I/DD.
Can be conducted from anywhere in the United States (one centralized
location or group of remote locations).
Requires being in a location with sufficient MD community to recruit
from if using population to test.
Testers have script in front of them during test and record results in real
time.
Although detailed field notes a positive, they require time for testers
to produce, unlike e-mail, for which returned e-mail response alone is
used.
I/DD = intellectual or developmental disability. MD = mental disability. MI = mental illness.
In-Person Testing: Strengths and
Weaknesses As Evaluated by Testers
With MD and Companion Testers
In-person testing is a labor-intensive process for any protected
class, given the recruitment and retention strategies needed to
ensure that the required number of paired tests is executed. In
this study, one significant concern was that people with MD
would require more time between tests to reduce potential for
fatigue, and that therefore completing the planned number
of tests within a reasonable timeframe would necessitate the
recruitment of a larger number of testers, which can have sig-
nificant cost implications. In addition, the use of a companion
tester raised concerns regarding both increased costs and a
possible delay in testing as a result of having to coordinate
multiple schedules for each test.
The initial literature review and focus groups, input from the
expert panel, and a small set of in-person pretests served as
preparatory steps to working with in-person testers with MI
and I/DD. These efforts were designed to provide key insight
into housing discrimination experienced by this population
and ideas for how to involve community members as in-person
fair housing testers, including the recruitment, selection, and
training of testers and the data collection process.
The in-person testing had a smaller sample size and a longer
execution time, and it was conducted in only two, very large
housing markets. To evaluate the inclusion and active partic-
ipation of people with MD as testers, four focus groups with
key participants and stakeholders were conducted, including
(1) project leaders, (2) testers with I/DD, (3) testers with MI,
and (4) companion testers.
Additional earlier focus groups, primarily consisting of testers,
were held in the weeks immediately after the completion of
in-person testing and data collection so participants could reflect
on their testing experiences. The detailed approach and results
of the focus groups, which includes quotes from participants,
can be found in one of the short papers associated with this
project, Accessible & Participatory Methods for Involving People
with Mental Disabilities In Housing Discrimination Testing.
Strategies for Tester Recruitment, Selection,
Retention, and Matching
Test coordinators from the two participating fair housing testing
organizations broadly recruited potential testers by contacting
a variety of community groups and organizations with which
people with MI and I/DD had active contact, such as programs
that provide housing or community living services. Because
of widespread employment disparities among this population,
some people with MI and I/DD were found to be more available
to work as testers; however, the availability of testers who were
currently unemployed may also have restricted the recruitment
of testers with full-time jobs or busy schedules.
Test coordinators also implemented extended interactions with
potential testers to allow for the evaluation of the “fit” between
the tester and the testing responsibilities involved (that is,
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discerning if the candidate could complete the essential job
duties). During these interactions, test coordinators provided
potential testers a candid and thorough description of the
project and their expected role, including an emphasis on
the responsibilities of being a tester versus other roles in the
project, assessing how the potential tester understood his or
her role, and the potential tester’s comfort with pretending to
be searching for an apartment and disclosing their disability
during the housing search process. All these issues were
proactively addressed during the initial tester training. For
some, initial training helped test coordinators make a final
determination about a potential tester’s involvement in the
actual in-person tests.
In addition, the study team learned how best to deliver train-
ing to potential testers with MD, by simplifying and limiting
background information and lecture and instead focusing on
short practice exercises, open discussion of any questions, and
other modifications that enable testers to gain comfort carrying
out a test and working with a companion tester.
Test coordinators also noted that they needed to allocate
significant time to the recruitment process, needing initially
to recruit about three times the number of testers needed. For
example, in some cases, most notably among potential testers
with I/DD, availability and reliability were issues (for example,
getting training scheduled, not showing up for scheduled
training, the availability of reliable transportation, and the
need to navigate a new transportation route without support).
Finding available testers was especially difficult given the need
to coordinate I/DD testers with companion testers for initial
training, practice testing, and each in-person test.
Despite these challenges, test coordinators from the two
participating testing organizations were able to recruit the
required number of testers due to their extensive contacts and
continual networking with community groups and people with
disabilities. These established connections with community
groups and people with disabilities were essential to this effort
and would be difficult for organizations not familiar with and
embedded within disability communities to replicate. The use
of these community-based testing organizations was a critical
component of the project and a key to success in actively
supporting people with MD during the in-person testing effort.
Test coordinators also noted that it was important to identify
people who would be good companion testers, and they noted
that ensuring a strong rapport between a tester with disabilities
and his or her companion tester was key to the protected
testers’ comfort and to the quality and efficiency of testing. Test
coordinators also noted that it was especially important that
they consult with both the protected tester and the companion
independently, and early in the partnership, to ensure that the
pair was a good match. This assessment of the match began
during the initial training, when the team purposively built in
many opportunities for pairs to get to know each other and
become comfortable with each other during practice tests. Test
coordinators and testers agreed that a tester’s choice of his or
her companion was very important to the comfort and fidelity
of the tester and data collection and agreed that pairs should be
rematched if one of the members was not comfortable.
Preparing and Supporting Testers: Initial
Training
Project leaders worked to design tester training to effectively
engage testers with both MI and I/DD and to actively support
their learning. For both groups, training materials deempha-
sized complicated text, reduced the number of ideas presented
at one time, and incorporated graphics, photos, and images
to illustrate more abstract points such as civil rights. The
trainings also included opportunities to observe testing skits
performed by test coordinators and project staff first, and then
for testing pairs to actively engage in several different testing
scenarios by role-plays (moving from working in pairs with an
assigned project staff to role-playing in front of the whole group
and getting feedback thereafter), and they included frequent
breaks to take in information learned. Basing their approach
on initial insights from stakeholder focus groups and expert
panel meetings conducted at the start of the project, project
leaders delivered the training differently for each group to
maximize their learning. For example, testers with I/DD had the
information broken into smaller units followed immediately by
opportunities to practice a small skill first and then build up
to practicing a full test and then onto an actual practice test in
the field, and testers with MI received initial information in one
sitting and then practiced different scenarios.
Testers reported that these experiences—particularly the oppor-
tunity to practice and receive individualized feedback—helped
them learn their responsibilities and feel prepared for their role.
Some testers noted that when the time between training and testing
in the field was significant, it was beneficial to have opportuni-
ties to brush up on their skills and review the testing protocol.
Project leaders observed that ensuring that the training had a
good deal of time devoted to hands on learning was essential.
Preparing and Supporting Testers:
Ongoing Support During In-Person Testing
The in-person paired testing was also designed to support
testers during data collection in ways that testers and compan-
ion testers found helpful. Project leaders provided scripts and
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checklists to help testers remember the personal information
they would need to provide during testing. They also provided
reminders via e-mail, telephone, or both (cell phone communi-
cations were used frequently before, during, and after testing)
and were readily available to respond to questions and assist
with unanticipated problems.
Many project leaders and testers agreed that being able to debrief
with test coordinators immediately after each test (either by
telephone or in person) was very helpful. The testing protocols
required debriefing within 48 hours of the actual test and, in
many cases, testers completed debriefing immediately after the
test or within 24 hours. For some testers, being able to complete
the forms at the testing coordination agency allowed them
access to onsite computers and to test coordinators in case any
questions arose. These factors were reported to have helped
the testers submit completed forms quickly and accurately.
Whether for training or data collection, project leaders thought
it was important to ask testers what they needed assistance
with (for example, writing, reading, or a quiet room to
complete forms in) and to be flexible in responding to testers’
emergent needs. Many noted that the level of support needed
decreased over time as testers increased their skills and level
of comfort. Although some testers initially felt nervous, they
reported becoming increasingly comfortable as they gained
experience. Thus, it was important to support a key group of
testers so they could do many tests and feel comfortable in
doing so, rather than trying to have a large pool of testers who
completed only one or two tests each.
Preparing and Supporting Testers: Use of
Companion Testers As Ongoing Supports
Companion testers also provided support to protected testers
during data collection. For example, when testers forgot to ask
a question of a landlord, “got off track,” or “froze,” companion
testers were able to naturally prompt the tester or provide a
response. Companion testers also reassured testers and helped
them feel less nervous during data collection or when in a new
area of their community. Companion testers were also able to
provide assistance by taking notes, organizing and remember-
ing information, helping out when unanticipated situations
arose, and in some cases with transportation.
Many testers with MD and companion testers thought that
the presence of the companion testers may have helped the
protected tester feel less stressed, because immediate support
was available. It was also noted that protected testers and
their companion testers complemented one another during
data collection by offering different ideas and that working as
a pair made the experience more enjoyable. Protected testers
and companion testers noted that the support provided by
companion testers during data collection may have also added
credibility to the disclosure of a disability by testers. On the
other hand, some companion testers wondered whether their
presence tempered potential opportunities for differential
treatment by landlords.
Most thought that companion testers were most effective when
they saw their relationship with the tester as a partnership;
that is, when companions understood that they were there to
support testers, not to be testers. To achieve this understanding,
companion testers needed to be flexible to their paired tester’s
needs and preferences. The dynamic of successful relationships
was evident when testers and companion testers had discussed
and agreed on each individual’s role and responsibility, had
good communication before and after data collection, and both
contributed to the completion and approval of reporting forms.
Mentoring, training, and role-playing may be required to help
companion testers excel in these supporting roles. The need
for training on how to be a good companion tester may have
been particularly relevant for companion testers who had been
testers in other fair housing testing situations. Although their
previous experience provided great knowledge and insight, they
also had to transition to playing a supporting role, rather than
the primary role, during a test.
When directly asked whether companion testers were needed,
the study team agreed that most testers with I/DD would need
a companion tester to complete data collection. The study team
also believes, however, that most testers with MI, and perhaps
some testers with I/DD, could initially benefit from a compan-
ion but could potentially conduct testing on their own as they
gained experience.
Documenting Differential Treatment and
the Role of the Companion Tester
Some protected testers reported that they thought they
experienced negative treatment by housing providers or agents
and that the companion tester helped to document and handle
that treatment. For example, one tester was asked repeatedly
whether he had a criminal background, what his income was,
and whether he could afford the unit. Another thought the
housing provider was suggesting she may not be intelligent
enough to live in the building, and another was told that the
landlord would “pray for her.” Others reported landlords acting
distracted (talking on the telephone or looking at their watch),
being abrupt in interactions, refusing to provide an application
(likely because an application had been received earlier in the
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day), or simply “giving attitude.” Companion testers had the
sense that testers appreciated having someone with them to
witness and validate this treatment.
Recommendations for Expanded Testing
in the Future
Although they understood the scientific value of the current
testing approach and its focus on one specific disability group,
many testers stated that they wished the project could be
broadened to better reflect the actual experiences of individuals
with MD, especially because many people with MD experience
more than one functional limitation. For example, some
people with I/DD also were anticipating some future physical
accessibility issues and wanted to be able to document those as
well. They also thought it would be illuminating to study the
qualities of accessible housing, particularly what that means
and looks like for people with MD.
In considering the expansion of matched-pair testing to
study housing discrimination on the basis of MD to a larger
geographic scale, project leaders, testers, and companions had
many recommendations. For example, project leaders—
• Thought that having an experienced, centralized oversight
team would be important to ensuring that the data
collection protocols are being administered similarly
across sites (including for training), to facilitate ongoing
communications among sites, and to provide ongoing
support and accommodations, as needed.
• Confirmed the importance of some strategies that were
used in this project, such as the need for housing organiza-
tions to partner closely with organizations run by people
with disabilities within testing regions to succeed in this
work.
• Stressed the importance of allowing adequate time for
the recruitment, training, and ongoing support of testers
with MD, with some suggesting the initial recruitment of
approximately three times as many testers as originally
needed.
• Believed that holding training in places that are familiar
to potential testers, such as at disability and community
organizations, could help attract testers with MD because
they are more likely to trust these sites.
• Emphasized that, in preparing testers and companion
testers for data collection, the research team and com-
panion testers should not make assumptions about what
testers can and cannot do.
• Agreed that experienced testers with I/DD and MI, and
companion testers, might be well-equipped to train future
testers, and their role as peer mentors and trainers should
be considered in future studies.
• Emphasized the value of building in time for mentoring
and one-on-one training.
Testers with MI and I/DD and their companion testers also
made valuable suggestions, including—
• Agreeing on the benefits of making sure that everyone has
an opportunity to role-play and complete a practice test
with feedback.
• Noting that having all testers engage in more than one
practice test might be advantageous.
• Suggesting that, although each person is unique, trainings
should include some general information about MI and I/DD
at the start of tester interaction that, in a respectful way,
acknowledges the considerable heterogeneity of people
with MD.
• Recommending that they receive a checklist detailing
everything they should do before a test (including practical
information, such as use the restroom).
• Expressing a desire that they do tests in areas where their
personal characteristics match those of the local communi-
ty and in areas that “feel safe.”
• Noting that it would be helpful to attempt to make sure
that apartment-viewing appointments were with leasing
agents and not with maintenance personnel.
• Suggesting that they should also be involved in making
calls to arrange apartment-viewing appointments, because
some profile information is requested at that point of contact.
• Raising the issue of how to ensure that testers receive
support for any emotional reactions they may have during
data collection.
• Encouraging testers and companion testers to return to the
testing coordination agency after each test to debrief and
complete reporting forms, and after testing would also be
a potential time to support them emotionally, give them
additional resources if needed, or both.
• Urging that test assignment and report forms be as clear as
possible so that testers and companions would have fewer
questions for test coordinators.
• Raising the possibility of alternative payment options
so that those who receive disability benefits could more
fully participate without having their subsidized disability
income being at risk.
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Finally, several testers suggested that all testers should have the
chance to reflect and debrief at the end of the project, similar
to what was done in debriefing focus groups with a small
sample of testers and staff in this study. Testers expressed
that the focus groups enabled them to validate their feelings,
revisit their experiences and make sense of them, reconnect
with other testers and companion testers, and validate their
contributions and role in the overall project.
The pros and cons of in-person testing are summarized in Table 36.
In-person testing yields richer data than the other modes, but it
costs more and takes more time to complete the tests. Although
that is true for any protected class, the pros and cons are ampli-
fied when using people with disabilities as testers. Depending
on the objective, the added time and costs associated need to be
weighed against the data produced.
Table 36. Pros and Cons of In-Person Testing
Pros Cons
Face-to-face interaction with a housing provider captures richest, most
realistic interaction information, including verbal and nonverbal responses.
Logistically complex; scheduling of two testers and companion for
protected tester to conduct tests and debrief.
Test reaches deeper into rental transaction. Tester recruitment, training, support, and retention are challenging.
Involves people with MI and I/DD in conducting research, which increases
social validity of findings.
Potential for tester fatigue and emotional reactions need to be consid-
ered in training and debriefing support.
Use of companion without disability provides additional attention to
detailed observations and field notes for improved rigor of analysis of
findings.
Requires longer time in the field for testing to coordinate tests.
Upfront screening and training reduces attrition, and people with MD
were found to be effective testers.
Requires more preparation, time, and resources, especially collaboration
and involvement of disability and community organizations that under-
stand how to provide accommodations to testers with MI and I/DD.
I/DD = intellectual or developmental disability. MD = mental disability. MI = mental illness.
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Summary, Conclusions, and Recommendations
The pilot testing effort documented in this report represents
the largest and most comprehensive effort to date to validate
methods of testing for housing discrimination against people
with mental disabilities. The pilot testing also represents the
first time that people with MI and I/DD have been enlisted to
serve as in-person testers in a housing discrimination study of
this size and therefore contributes significantly to the knowl-
edge about disability-related housing discrimination and the
design of research methodologies that are accessible, inclusive,
and participatory to people with MI and I/DD.
The testing conducted in this study documented significant
levels of adverse differential treatment toward individuals with
MD when compared with the treatment of a control group of
individuals who did not have MD. Such adverse differential
treatment included observations that individuals with MI or I/
DD were—
• Less likely to receive a response to their inquiry (17.55 percent
of tests favored the control group of people without dis-
abilities compared with 9.19 percent that favored people
with MI and I/DD in e-mail testing).
• Less likely to be told an advertised unit was available (5.94
percent favored people without disabilities compared with
0.99 percent that favored people with MI and I/DD in
in-person testing).
• Less likely to be invited to contact the housing provider to see
the unit (7.69 percent favored people without disabilities
compared with 0.00 percent that favored people with MI
and I/DD in e-mail testing).
• Less likely to be invited to inspect the unit (21.26 percent
favored people without disabilities compared with 16.47
percent that favored people with MI and I/DD in telephone
testing).
• More likely to be encouraged to look at a different unit than the
one advertised, a potential indicator of steering people with
MI and I/DD toward specific buildings or areas within
rental complexes, resulting in segregated living patterns.
Rates of adverse treatment also varied between disability types,
with higher rates of adverse treatment noted for individuals
with MI than for individuals with I/DD. This finding may indicate
that individuals with MI face more negative stereotypes and
stigma from housing providers and their agents.
44
This study,
however, was not large enough to yield conclusive evidence
about what motivation might be underlying the observed dif-
ferential treatment between people with MI as compared with
people with I/DD, nor was the study designed to examine dif-
ferential discrimination based on type of MD. Future larger-scale
research should explore these questions and might include
additional focus groups with housing providers to discuss study
findings and to seek housing providers’ reactions and responses
to the results of fair housing testing.
In both e-mail and telephone testing, a significant percentage
of individuals with MI and I/DD also experienced adverse treat-
ment with respect to requests for a reasonable accommodation.
The reasonable accommodations requested were identified as
specific to the protected tester’s functional needs. The willing-
ness of a housing provider to grant a request for a reasonable
accommodation varied by mode of testing, with requests for
a reasonable accommodation made by telephone receiving
significantly more favorable responses than requests made by
e-mail.
45
This finding may reflect the fact that housing providers
were able to have a more personal or indepth conversation with
the tester with MD via telephone, resulting in more favorable
responses to these requests. On the contrary, in e-mail testing,
replies were often more formal and very limited in scope. These
experiences may advise the use of telephone over e-mail testing
in future large-scale discrimination testing.
Negative responses to testers’ requests for a reasonable accom-
modation ranged from outright denials to more subtle barriers,
such as indications that the individual with MD would be
responsible for actively seeking out and appealing the denial
of their request with higher-level managers whose name and
contact information were then not provided.
46
These findings
on responses to requests for reasonable accommodations
further add to potential discrimination against people with
44
This observation was supported in the qualitative data obtained from focus groups of people with MI that were conducted both before and after the testing to
reflect on their experiences.
45
In-person testing protocols did not include a request by the protected tester for a reasonable accommodation.
46
In addition, testing results varied by rental market, with the rate of granting a reasonable accommodation request lowest in Chicago-Joliet-Naperville, IL-IN-WI
(38.6 percent) and highest in Albuquerque, NM (75.5 percent).
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MD, and it is recommended that reasonable accommodation
requests be included in in-person testing in the future, using
a test design similar to that used in telephone testing in this
project, wherein requests for a reasonable accommodation are
not made unless the tester is invited to inspect the unit.
This study also yielded significant findings on how to imple-
ment fully inclusive fair housing testing employing people with
MD. All three modes of testing that were carried out (e-mail,
telephone, and in person) showed promise for bringing testing
for housing discrimination on the basis of MD to a national
scale. Each produced a different form of testing data that not
only yielded evidence of discrimination but also provided
insights on opportunities for future testing.
Because online housing searches and e-mail communications
with housing providers during these searches is anticipated
to increase, efforts to use e-mail testing in this project should
inform future e-mail testing. Observations include—
• E-mail testing is a relatively cost-effective method of
tracking changes over time in discrimination in initial
contacts people with MD have with housing providers
(that is, trying to get in the door).
• Longitudinal data showing a change in the rates of differ-
ential treatment of people with MD could be efficiently
collected by subsequent e-mail testing of the same sample
of housing providers.
• E-mail could also be useful for monitoring how housing
providers are responding to reasonable accommodation
requests, if a followup e-mail is added to further interact
on the reasonable accommodation request. This technique
could also ensure that the housing provider is responding
directly to the request as opposed to sending a scripted or
form reply.
The in-person testing in this study that specifically involved
testers with MD demonstrates that people with MI and I/DD
can serve as effective testers when the proper training and
supports are provided.
As the first large-scale in-person testing that had people with
MD as testers, this project demonstrated the importance of
disability-focused and directed training. The entire process of
engagement with testers, from recruitment to training, testing,
and debriefing, was grounded in constant feedback from
the people with MD and members of the expert panel. The
evidence from the in-person testing in this project suggests
strongly that both populations can also conduct telephone
testing if the same approach to training and debriefing is used.
This project demonstrates that the training and use of disability
rights organizations to coordinate and debrief testers is a highly
effective design for testing focused on disability and was a
critical component of the successful completion of in-person
testing in the given timeframe in this study.
The use of companion testers, although adding cost and
coordinating time, resulted in several important benefits to the
project, including—
• Providing valuable cognitive and emotional assistance to
testers with MD before, during, and after each test.
• Providing a natural way to reveal the MD via a friend in
conversation while viewing a unit.
• Providing a means to confirm what had been heard and to
clarify what was observed during each test, thus providing
richer data and field note observations.
• For testers who used public transit, companions often
(although they were not expected to) provided transit
assistance or went along on public transportation with the
tester with MD, ensuring that both testers would get to
appointments in a timely fashion.
Findings from this project, although important in documenting
how housing discrimination may occur against people with
MI and I/DD as they seek rental housing, are limited given the
small sample sizes, particularly when attempting analyses on
variations of treatment between subcategories of paired tests,
such as gender, race, type of disability, and geography. Future
research, done on a larger scale, could examine other important
issues, for example—
• Are people with different types of MD, or different requests
for other types of reasonable accommodations, met with
less favorable responses or more discrimination?
• How do factors such as age, gender, race, and previous
living status contribute to or interact with MD to affect
rental housing access?
• How does income or economic status interact with MD to
affect housing access and choice?
• How does the use of rent subsidies (for example, Housing
Choice Vouchers) and other government-supported
sources of income for housing affect housing access and
choice for people with MD?
Finally, efforts to find protocols to study and test for housing
discrimination after initial contact with a housing provider (for
example, application results, before move in, after move in,
changes in response to requests for reasonable accommodations
over time, and criteria for lease termination) should continue.
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Based on the results of the study, the authors make the follow-
ing recommendations.
• A broad-based education initiative should be created to ed-
ucate housing providers, including owners and landlords
and their agents, about fair housing rights and obligations
and about appropriate policies and practices when dealing
with individuals with MI, I/DD, and other MD.
• Public and private housing, disability, and civil rights
organizations should redouble efforts to engage and educate
the community of people with MI, I/DD, and other MD about
their rights under federal, state, and local antidiscrimina-
tion laws, how to recognize potential discrimination, and
what actions to take when faced with discrimination.
• Additional research is necessary to better understand the
scope and severity of the discriminatory barriers en-
countered by individuals with MI and I/DD as they seek,
obtain, and retain accessible rental housing.
• Individuals with MI and I/DD can and should be an integral
part of future housing research and testing, housing dis-
crimination education initiatives, and efforts to strengthen
housing policy to promote equal housing opportunity.
In addition, protected and companion testers involved in the
in-person testing for this project offered the following summary
recommendations for including people with MD in future
housing discrimination research.
Project Leadership and Design
• Project leadership is deeply important to people with
MD. Having test coordinator sites embedded within local
disability and housing rights organizations was especially
valuable in supporting testers with disabilities.
• Testing sites and all project members should actively foster
commitment to, and belief in, the inclusion of people with
MD at all stages of research projects.
• An inclusive project should foster coleadership, in which
the research team and the protected community colead
and collaborate to design and conduct discrimination
research with a goal of bringing housing discrimination
experts together with people with personal experience
with disability to fully and accurately understand the
actual experiences people have when seeking housing.
• Future testing should use experienced testers with MD
(such as those from this project) and their experiences in
protocol development and training as peer trainers and
mentors in a train-the-trainer model.
Recruitment and Selection of Testers
• Reinforce responsibilities and expectations of participation
with potential testers to encourage increased reliability and
validity of findings.
• Provide sufficient time, resources, and expertise to recruit,
select, and support team members with MD.
• Have a sustained selection process for testers and compan-
ion testers that allows for time to build relationships and
develop a fit between test pairs.
• Involve experienced testers with MD in tester recruitment
and selection as they also have key contacts and networks
throughout protected communities.
Training and Data Collection
• Be proactive and flexible in accommodating team members
with MD in training and data collection, including specific
attention to strategies to make participation more accessi-
ble and inclusive to this community.
• Have a choice and range of supports and accommodations
available to testers, and match emotional support to
individual needs, adjusting the supports as needed as
testers gain experience.
• Provide testers with choice throughout the process,
including a choice of whether to stay with a companion
tester or to choose another that is a better fit.
• Ensure that all testers have time to role-play, practice, and
receive individualized feedback during trainings.
• Train companion testers to provide positive, effective support
to testers with MD in a respectful, person-directed way.
• Assess the value of companion testers—between the added
credibility and validity added to the capture of testing data
versus the potentially unanticipated effect that their pres-
ence may actually decrease or buffer differential treatment.
• Design all materials, illustrations, role-plays, and videos
in all training and data collection instructions and forms
using clear, concise, and plain language.
• Use technology to enable people with MD to take on
increasingly independent roles in testing, such as the use
of voice-operated smartphones or tablets during data
collection and reporting.
• Discuss in initial trainings the attitudes that may be
encountered during tests and how to capture attitudes and
treatment in more detail in reporting.
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Appendix A: Qualitative Analyses and Findings on Overt
and Subtle Discrimination Against People With Mental
Disabilities by Different Testing Modes
The purpose of this additional indepth qualitative study was
to provide detailed qualitative analyses of the overt and subtle
discrimination experienced by people with mental disability
(MD)—that is, people with mental illness (MI) and people with
intellectual or developmental disability (I/DD)—as gathered
from multiple sources including e-mail, telephone, and in-person
testing, field notes, and tester debriefing reports. The following
research questions were used to guide the qualitative analyses.
• Is there evidence of subtle discrimination on the basis of
mental disability in the e-mail, telephone, and in-person
tests conducted during this study, and what does it look like?
• Is there evidence of overt discrimination on the basis of
mental disability in the telephone and in-person tests
conducted during this study, and what does it look like?
Qualitative Analysis Methodology
The structure and process for the analyses was guided by
Ahmed and Hammarstedt (2008), who examined subtle
discrimination on the basis of sexual orientation in the rental
housing market using e-mail testing, and by Hanson, Hawley,
and Taylor (2011), who proposed a methodology for qualita-
tively analyzing e-mail contents for subtle discrimination. As
in these previous studies, this study used matched-pair tests in
that each pair was matched in key demographics (for example,
age, gender, and race or ethnicity) except for MD status, with
one tester having an identified MD and one tester not having MD.
The tester with MD (protected tester) specifically disclosed
having either MI or I/DD. This reveal occurred in multiple
ways: (1) disclosing having lived in a psychiatric facility or
nursing home for the past year, (2) directly identifying himself
or herself as a person with I/DD or MI, and (3) requesting a rea-
sonable accommodation (that is, using an assistance animal or
requesting a verbal rental payment reminder). The other tester
in the pair (control tester) did not identify as having a disability
and instead identified as someone who recently graduated from
college or who had been living with his or her parents to show
a matched previous rental history. Both testers in a pair were
also given matching profiles that included similar income and
job histories, at a level adequate to pay for a one-bedroom rent-
al unit in that market, and other similar personal demographics
other than disability status.
E-mail Testing
As reflected in the larger discrimination study, 359 e-mail pairs
were sent out, including 176 pairs with testers with I/DD and
183 pairs with testers with MI. Out of those 359, 187 pairs
received at least one response from an agent or landlord. To
qualitatively compare the e-mails in this particular phase of
the study, we selected only e-mail pairs that both received
responses (n = 91 pairs). Of those 91 pairs, 9 were not codable
for the following reasons: (1) different agent responded, (2) agent
noticed the testing and test was not used, or (3) lack of quali-
tative data to code. Therefore, 82 pairs were codable, including
45 pairs with a tester with I/DD and 37 pairs with a tester with
MI. Out of the 82 e-mail pairs, 25 e-mail tests also included a
reasonable accommodation request that could be analyzed (see
Figure A-1).
Figure A-1. E-mail Testing Responses
E-mail pairs sent out
(n = 359)
E-mail pairs with
at least
one response
(n = 187)
E-mail pairs with
responses to both
(n = 91)
E-mail pairs
not codable
(n = 9)
E-mail pairs
coded
(n = 82)
I/DD testers
(n = 45)
MI testers
(n = 37)
With RA request
(n = 10)
With RA request
(n = 15)
I/DD = intellectual or developmental disability. MI = mental illness. RA = reasonable accommodation.
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Telephone and In-Person Testing
A total of 668 pairs participated in telephone tests of ran-
domly selected available apartment ads across nine different
metropolitan statistical areas (MSAs). In-person testing
involved a visit to view the apartment by 101 pairs in the
Chicago-Joliet-Naperville, IL-IN-WI, and the Washington-Ar-
lington-Alexandria, DC-VA-MD-WV MSAs, 83 of which had
valid qualitative data to additionally code. See Table A-1.
Table A-1. Samples of Telephone and In-Person
Testing
Type Sample
Type of Disability
Total
I/DD MI
Telephone Valid pairs 300 352 652
Missing
a
11 5 16
Total 311 357 668
In person Valid pairs 48 35 83
Missing
a
3 15 18
Total 51 50 101
I/DD = intellectual or developmental disability. MI = mental illness.
a
Qualitative data were not available to code.
Data Analysis
A mixed-methods approach was used to analyze data, beginning
with qualitative analyses, followed by quantitative frequency
counts and analyses of summary themes, to answer the re-
search questions and fully understand discrimination practiced
by housing providers. Each type of testing used different data
analysis methods, as described in the following section.
E-mail Testing Only: Quantitative
Coding of Keywords Indicating Subtle
Discrimination
The housing discrimination study by Hanson, Hawley, and Tay-
lor (2011) provided significant guidance for the interpretation
of the results of e-mail testing, especially because e-mail testing
yields an explicit and defined text-based inquiry and response
that can be analyzed verbatim.
Hanson, Hawley, and Taylor describe several dimensions of
coding favorable and unfavorable treatment in landlord-tenant
correspondence. They describe favorable treatment as including
examples “if landlords describe the unit in a positive way, if
they mentioned other available units, if they invited further
contact, and if they used generally friendly language” (Hanson,
Hawley, and Taylor, 2011: 281) and unfavorable treatment as
asking the tenant for more information about their employment
or background or also as using more discouraging language,
such as emphasizing additional fees and building rules. In
addition to the keyword list Hanson, Hawley, and Taylor cre-
ated, the analysis here added more unfavorable and favorable
treatment dimensions specific to MD (for example, asking for
further disability-related information or disclosure) that were
identified after a round of pilot coding.
Using the subtle discrimination keywords listed in Table A-2, two
members of the study team coded the frequency of positive and
negative languages used in e-mails. These counts were com-
pared between the protected and control groups and divided
into four categories: (1) present in neither, (2) present in both,
(3) control group only, and (4) protected group only. Evidence
of subtle discrimination was coded if positive language was
shown more frequently in the control tester only or if negative
language was more frequently present in the protected tester only.
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Table A-2. Subtle Discrimination Indicator Keyword Groups
Category Keywords
Positive language categories
Positive descriptive New Clean Quiet Nice Good Beautiful
a
Other
a
(for example,
wonderful)
View unit Tour
Show
Stop
Come
Visit
Meet
See
View
Look
Appointment
a
Other
a
Tour time offered Specific time Range of time
Prompts Quick
Hurry
Fast
Today
a
Tomorrow
a
Call Application Look forward to
a
Other (for example, Let me
know, questions)
Greetings Hi
Hello
Hey
Dear Good morning/
afternoon
Others
a
Polite Thank you
Thanks
Sincerely Regards
Best
Please Love to
a
Happy to
a
Other
a
Other units Second Several Other
Negative language categories
Fees Application fee Deposit fee $ Fee starting Other
a
(for example,., pet policy, move-in fee)
Employment Employment Employer Income Paystub Credit Other
a
(for example, source of rent)
Background Criminal Background Verification
Verify
Other
a
Discouraging Already rented No longer Not available Best wishes
a
Good luck
a
Other
a
History Rental history Eviction Other
a
Negative descriptive Old Needs work Other
a
Disability
a
Disability
Handicap
Diagnosis
Medication
Hospitalization
Treatment
Treated
Accommodation Service dog Other (for example, mentally
competent, caregiver)
a
Indicates keywords that were added in this study.
Qualitative Interpretation and Grounded
Theory Analysis: E-mail, Telephone, and
In-Person Testing
Because additional qualitative data were available and new,
given the focus on testers with MD in this study, a grounded
theory qualitative approach was used to generate a framework
to analyze and code both overt discrimination (as defined
within the Fair Housing Act) and more subtle, potential
discrimination. After coding the keywords, the two coders
also qualitatively described their overall impression of each
pair of e-mails, concerning subtle or overt discrimination (or
both) against one tester. Each decision was associated with a
description of evidence for subtle or overt discrimination or
no subtle or overt discrimination, as identified by coders. If
consensus on the discrimination status could not be reached
between the two coders, a third, blinded member coded the
e-mail to resolve the difference. By constant comparison of
these qualitative data, the findings were aggregated into themes.
These themes then were used as criteria for determining subtle
or overt discrimination.
Converting Qualitative Findings to
Summary Frequency Counts: E-mail,
Telephone, and In-Person Testing
Qualitative data were assigned a quantitative descriptive
frequency count—if subtle, overt, or no discrimination was
indicated—an assessment of whether the response showed
or did not show an openness for further communication with
the landlord. All quantitative data were entered into an SPSS
17.0. Descriptive analysis and cross-tabulation analysis were
conducted to examine the frequency and proportion of different
categories indicating subtle discrimination. McNemar’s Test
was used to analyze the difference in treatment between the
control and protected groups (McNemar, 1947), with a p-value
of less than .05 used to indicate significantly different treatment
between control and protected testers.
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Results
E-mail Testing
Quantitative Analysis of Keywords Related to
Subtle Discrimination
Quantitative analysis of keywords for positive and negative
language shows significantly different treatment in several
areas. The control group was more frequently given a specific
or range of time to view an available housing unit or to meet
the landlord (p < .05) when compared with protected testers
with MD. E-mail responses to testers with MD showed a
significantly higher use of discouraging words (p < .05). A
trend also emerged of using positive language more often with
control group only and negative language more often with
the protected group only; however, the difference was not
statistically significant in some cases. See Table A-3.
As shown in Table A-4, an analysis of positive and negative
language used in e-mail responses showed that 34.1 percent
of landlords practiced favorable treatment to people without
disabilities by using at least one of the seven positive language
categories. A total of 17.0 percent of landlords practiced
unfavorable treatment to people with MD by using at least
one of the seven negative language categories. Combined, 37
e-mails (45.1 percent) showed at least one category of subtle
discrimination present.
Qualitative Themes and Descriptive Frequency
Counts on Subtle Discrimination
During e-mail testing, seven themes emerged related to subtle
discrimination against the protected testers with MD. These
themes were (1) more encouraging to control tester or more
discouraging to protected tester; (2) more friendly, informal,
or personalized with control tester or more formal or less
personalized with protected tester; (3) more urgency, priority,
or prompting of further action for control tester to view the
unit; (4) agent made him or herself more available to control
tester; (5) agent requested more effort or information from
protected tester before moving forward; (6) agent (potentially
inadvertently) discriminated against protected tester by asking
about disability or discussing disability in a discouraging way;
and (7) agent did not agree to or acknowledge reasonable
accommodation requests related to MD. Each of the seven
themes that emerged from the data is outlined in the following
sections, followed by examples from field notes that epitomize
Table A-3. Response Difference in E-mail Content
Response Present in Neither Present in Both Control Group Only Protected Group Only McNemar p-Value
Positive language
Positive descriptive 45 (77.6%) 8 (13.8%) 2 (3.4%) 3 (5.2%) 1.000
View unit 14 (24.1%) 31 (53.4%) 8 (13.8%) 5 (8.6%) 0.581
Tour time offered 26 (44.8%) 18 (31.0%) 12 (20.7%) 2 (3.4%) 0.013*
Prompts 14 (24.1%) 37 (63.8%) 3 (5.2%) 4 (6.9%) 0.227
Greeting 12 (20.7%) 34 (58.6%) 7 (12.1%) 5 (8.6%) 0.774
Polite 8 (13.8%) 44 (75.9%) 4 (6.9%) 2 (3.4%) 0.687
Other units 56 (96.6%) 1 (1.7%) 0 (0.0%) 1 (1.7%) 1.000
Negative language
Disability 52 (89.7%) 1 (1.7%) 0 (0.0%) 5 (8.6%) 0.063
Discouraging 49 (84.5%) 3 (5.2%) 0 (0.0%) 6 (10.3%) 0.031*
Background 57 (98.3%) 0 (0.0%) 0 (0.0%) 1 (1.7%) NA
Employment 54 (93.1%) 3 (5.2%) 0 (0.0%) 1 (1.7%) 1.000
Fees 47 (81.0%) 5 (8.6%) 2 (3.4%) 4 (6.9%) 0.687
Negative descriptive 58 (100.0%) 0 (0.0%) 0 (0.0%) 0 (0.0%) NA
History 58 (100.0%) 0 (0.0%) 0 (0.0%) 0 (0.0%) NA
NA = not applicable.
Notes: n = 58 pairs. p-value < 0.05 indicates significantly different treatment between the two groups. Identical e-mail replies (n = 24) were not
coded with this criterion. n = 9 did not have qualitative data available to code.
Table A-4. Subtle Discrimination Responses in Multiple Categories
Response
Number of Categories
0 1 2 3 4 5
Positive language to control class only 54 (65.9%) 21 (25.6%) 6 (7.3%) 1 (1.2%)
Negative language to protected class only 68 (83.0%) 11 (13.4%) 2 (2.4%) 1 (1.2%)
Negative and positive language against protected class only 45 (54.9%) 26 (31.7%) 8 (9.8%) 2 (2.4%) 1 (1.2%)
Notes: n = 82 pairs. n = 9 did not have qualitative data available to code.
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it. In many cases, quotations were taken directly from landlord
responses. In some cases, the researcher’s analysis is summa-
rized given the data supporting subtle discrimination, such as
in the form of tone throughout or timing of the e-mail.
Theme 1: More encouraging to control tester or more
discouraging to protected tester.
Researcher analysis: “Agent used more encouraging
language with Control tester (C) (‘your future home,’
‘your new home’). Agent included list of amenities and
photos of rental community with C [control tester] but
not PC [protected tester]. C received two emails, while
PC got one. The additional email C received had more
information with the range of rates for 1BR and 2BR and
included an easy link to schedule a visit.” (12885)
Theme 2: More friendly, informal, or personalized with
control tester or more formal or less personalized with
protected tester.
Researcher analysis: “Both were invited for a visit. How-
ever, the agent introduced herself (‘my name is Wendy
the property manager’), asked for a contact number,
and showed more willingness (e.g., ‘I look forward to
working with you in the very near future in obtaining an
apartment!’) to assist C and not to Protected Tester (P).”
(12959)
Theme 3: More urgency, priority, or prompting of further
action for control tester to view the unit.
Researcher analysis: “P [protected tester] emailed agent
first, but agent responded to C first and C was given an
earlier time slot to visit.” (9668)
Researcher analysis: “No invitation to contact the landlord
for P, while C was given the landlord’s phone number.”
(12877)
Theme 4: Agent made him or herself more available to
control tester.
Researcher analysis: “Landlord made himself only
available during the working day to PC, but offered more
availability to C.” (11565)
To protected tester: “I can meet you at the building daily
10am-2pm. The unit is currently occupied till June 1.”
To control tester: “I’m by the building every day, 9am-
3:00pm. What’s a good day/time for you?” (12140)
Theme 5: Agent requested more effort or information from
protected tester before moving forward.
Researcher analysis: “PC asked the agent to suggest available
hours, but the agent did not give PC these hours; instead,
she told PC to call (extra step/effort that PC now needs to
take).” (12133)
Researcher analysis: “Agent offered tour to C immediately,
but for PC the invite was conditional (‘Please introduce
yourself a little bit more before make an appointment’). The
landlord asked several questions about the tester’s request
for an assistance animal accommodation, income, and move
in date and how many people would be renting.” (11914)
Theme 6: Agent (potentially inadvertently) discriminated
against protected tester by asking about disability or
discussing disability in a discouraging way.
Researcher analysis: “Very subtle discrimination. Agent
seems to be trying to be helpful with the parking situation,
but says ‘do you still want to see it?’ as if this may have
deterred PC. Never actually says to PC that unit is still
available, but does to C.” (12491)
Researcher analysis: “Well-meaning agent, but asks questions
about disability and mentions needing to qualify based on
the application to PC but not to C. The agent is polite to
PC (offers to give reminder calls for rent, says would love
to have as part of community, etc.), but still mentions the
need for a formal application for PC but not C.” (12946)
Theme 7: Agent did not agree to or acknowledge reasonable
accommodation requests related to MD.
Researcher analysis: “PC asked about having an assistance
dog as reasonable accommodation, but the agent respond-
ed with the building’s pet policy and that certain breeds
are not allowed in the building regardless of the disability
accommodation request.” (13249)
Researcher analysis: “Agent did not acknowledge the tes-
ter’s reasonable accommodation request. PC email request:
‘…My dog is my assistance animal and I want to make sure
she can stay with me in this apartment.’ No response from
landlord to this request.” (12719)
Using these themes, each e-mail pair was coded as containing
subtle discrimination or not (see Table A-5). This analysis
showed that about 42.7 percent of the protected testers experi-
enced some type of subtle discrimination against them, whereas
only 2.4 percent of the control group did.
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Table A-5. Subtle Discrimination in E-mail Testing
Subtle Discrimination Against
the Protected Class
Count
(Percentage)
Yes 35 (42.7%)
No 41 (50.0%)
Unclear 6 (7.3%)
Subtle discrimination against the control group 2 (2.4%)
Notes: n = 82 pairs. n = 9 did not have qualitative data available to code.
Quantitative Analysis of Reasonable
Accommodation Requests
Of the 82 paired e-mail tests, 25 protected testers included a
reasonable accommodation request in their initial inquiry (that
is, asking for either a rent reminder or to have an assistance
animal in the apartment). Of those inquiries, 23 e-mail pairs
could be coded, of which the housing provider did not re-
spond to or acknowledge the request in 16 cases and approved
the request in 3 instances. In the remaining 4 instances, the
landlord did not agree to the request. In other words, they
responded negatively, such as “dogs are not allowed,” or
inappropriately, such as asking about the size of the assistance
animal before deciding whether they would accept the request.
Both of these examples represent discriminatory practices. A
subanalysis was conducted to explore which disability group
or which type of reasonable accommodations were more or
less likely to receive negative responses. See Table A-6.
Quantitative Analysis of the Status of Further
Communication
The status and overall tone of further communication with the
landlord was also coded to examine whether they left an open
door (positive to view unit) or a closed door (negative to view
unit). Although findings show that that the protected group
had slightly more closed-door episodes, significantly different
treatment was not shown between the two groups in e-mail
testing (Table A-7).
Table A-7. Open Door/Closed Door in E-mail Testing
Response
Control
Group
Protected
Group
McNemar’s
p-Value
Open door 53 (91.4%) 50 (86.2%)
0.223
Closed door 2 (3.4%) 4 (6.9%)
Unclear 3 (5.2%) 4 (6.9%)
Notes: n = 58 pairs. Identical e-mail replies (n = 24) were not coded
with this criterion. n = 9 did not have qualitative data to code.
Telephone Testing Findings
Qualitative Themes With Quantitative Analysis of
Subtle Discrimination
During telephone testing, six themes emerged related to subtle
discrimination against the protected tester. These themes were
(1) more urgency, priority, or prompting of further action
for control tester to view the unit; (2) more encouraging to
control tester or more discouraging to protected tester; (3) more
friendly, informal, or personalized with control tester or more
formal or less personalized with protected tester; (4) agent re-
quested more effort or information from protected tester before
moving forward; (5) agent made him or herself more available
to control tester; and (6) agent (potentially inadvertently)
discriminated against protected tester by asking about disability
or discussing disability in a discouraging way. The themes that
emerged are summarized in the following section, followed by
examples and quotations that epitomize them.
Unlike e-mail testing, telephone testing did not yield rental
agent quotations. Instead, quotations represent field note
excerpts or the tester’s own words describing the interaction
with the agent.
Table A-6. Housing Provider Responses to RA Requests in E-mail Testing
Group Type of RA Request Number of RA Requests
Responses
Total
Positive Negative None
I/DD Rent reminder 3 0 1 2 3
Assistance animal 7 2 2 3 7
MI Rent reminder 8 1 0 7 8
Assistance animal 5 0 1 4 5
Totals 23 3 4 16 23
I/DD = intellectual or developmental disability. MI = mental illness. RA = reasonable accommodation.
Notes: n = 23 pairs. n = 2 did not have qualitative data to code.
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Theme 1: More urgency, priority, or prompting of further
action for control tester to view the unit.
• Subtheme A: More prompting or urgency for control
tester to view the unit, complete an application, or follow
up.
Quotation (to protected tester): “[The agent said] I do not
give any information over the phone. Good bye.”
Quotation (to control tester): “The agent said would you
like to come in today and see the apartment?”
Researcher analysis: “No information about apartment was
given to PC, while C was given several details and invited
to view the unit.” (16484)
• Subtheme B: Agent shows priority to control tester by
re quest ing more information from him or her during the call.
Researcher analysis: “Agent asked for C’s last name, phone
number and email address to contact them, but did not
ask PC for this.” (12420)
Theme 2: More encouraging to control tester or more
discouraging to protected tester.
• Subtheme A: More units or lease options offered to
control tester.
Researcher analysis: “C offered more apartment options
(with rents ranging between $980 and $1040) and differ-
ent lengths of leases (3-13 months). PC offered one only
($1010) and length of lease wasn’t discussed.” (12420)
• Subtheme B: More positive information given about the
unit, community, or rental process to control tester or
more negative information given to protected tester.
Quotation (to protected tester): “Deborah [landlord] also
explained that Susan [renter] would need to make 3x the
rent and have a credit score of 650 or better.”
Researcher analysis: “Agent mentioned income/credit
requirement to PC tester only.” (12437)
Researcher analysis: “Agent told C about six amenities and
did not tell PC about any. Also, PC was told the applica-
tion process would take 7-10 days, while C was told it
would only take 3-5 business days.” (16235)
Theme 3: More friendly, informal, or personalized with
control tester or more formal or less personalized with
protected tester.
Quotation (to control tester): “I asked if I would just
come in and see the place and if I like it, I can rent it. He
laughed and said, ‘if we like each other, then you can rent
it. It’s not just about you.’ I said fair enough. … He asked
if I was moving with someone else. I said no. He said that’s
beautiful.”
Researcher analysis: “Agent was friendlier/joking with con-
trol tester and did not say anything like this to protected
class tester. Also, agent cut off protected class tester when
they were trying to justify their need for a reasonable
accommodation.” (12115)
Theme 4: Agent requested more effort or information from
protected tester before moving forward.
Quotation (to protected tester): “[Agent said tester’s
granddaughter with a developmental disability must call
to set up an appointment] “if she is really interested in an
apartment.”
Researcher analysis: “The agent would not accept the pro-
tected class tester calling for her granddaughter. Instead,
they required that the granddaughter call to set up the
appointment herself, which requires extra effort and may
not be possible for PC to do by self.” (15058)
Researcher analysis: “Agent asked for two pay stubs and/
or proof of income from the protected class tester but not
from the control tester.” (6696)
Theme 5: Agent made him or herself more available to
control tester.
Quotation (to control tester): “He said that he is available
today until 6pm and tomorrow from 9am-5pm to show me
the unit if I was interested. … He said I could give him a
call on his line; he said the number is different than what I
called. He gave me his personal line.”
Researcher analysis: “The control tester was told about the
agent’s availability and office hours, whereas the protected
class tester was not. Also, the control tester was given the
agent’s personal/direct line, whereas the protected class
tester was not.” (11955)
Theme 6: Agent (potentially inadvertently) discriminated
against protected tester by asking about disability or
discussing disability in a discouraging way.
• Subtheme A: Agent questions protected tester’s competence.
Quotation (to protected tester): “[The agent] was concerned
that Susan (PC tester) would not be able to care for herself
and may leave on the gas. I assured her that the counselors
would not allow her to go on her own if they felt she would
endanger herself.” (12250)
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Quotation (to protected tester): “Is Denise (PC tester) able
to care for the dog independently and clean up behind the
animal?” (10980)
Quotation (to protected tester): [The protected tester
asked for a rent reminder as a reasonable accommodation.
The agent] “said he was willing to do that but he would
hold me [family member calling] responsible. I explained
that this would be her responsibility; she would just need
the reminder when it was close to the time. He said that I
told him that Denise had a ‘problem’ and she was autistic.
He said that if he gave her the apt he would be willing to
do what I asked. However, because she had a ‘problem’
ultimately I would have to be responsible because he
couldn’t babysit her up there in that apt.” (12115)
• Subtheme B: Agent makes other assumptions about
protected tester due to their disability.
Quotation (to protected tester): [Immediately after disability
disclosure], “the agent asked if she [the tester’s sister with
a developmental disability was on Section 8 or SSI.” (16593)
Quotation (to protected tester): “[The agent said], ‘you
mentioned your brother needs to stay calm.’ She said ‘he
isn’t violent?’ I said ‘no he isn’t.’ She said ‘we are going to
do a credit/criminal background.’ [Agent] said ‘he doesn’t
have anything on his record?’ I said, ‘no not a thing.’”
Researcher analysis: “The agent appears to be linking
mental illness to violence and a criminal record, therefore
insisting on the need for a background check. This appears
to be evidence of stigma and stereotyping.” (11927)
Basing their analysis on these themes, coders summarized
whether subtle discrimination was present (Table A-8).
The results revealed that 63 percent of the protected testers
experienced subtle discrimination, with a higher percentage
(65.7 percent) among testers with I/DD.
Table A-8. Subtle Discrimination in Telephone Testing
Disability Yes No Unclear Total n
I/DD 197 (65.7%) 83 (27.7%) 13 (4.3%) 293
MI 214 (60.8%) 126 (35.8%) 9 (2.6%) 349
Totals 411 (63.0%) 209 (32.1%) 22 (3.4%) 642
I/DD = intellectual or developmental disability. MI = mental illness.
Notes: n = 642 pairs. 10 pairs were not coded because disability was
not disclosed during testing. 16 pairs did not have qualitative data to
code.
Qualitative Themes With Quantitative Analysis:
Overt Discrimination
Three themes emerged related to overt discrimination that
would be covered explicitly under the FHA. These themes were
(1) only the protected tester received a negative response about
availability of the unit, (2) fees or rent rates quoted were higher
for only the protected testers, (3) the agent made overt com-
ments related to disability, and (4) the agent denied reasonable
accommodation requests.
Theme 1: Only the protected tester received a negative
response about the availability of the unit.
Researcher’s analysis: “Initially said unit available then
changed the answer after disability disclosure, saying “‘call
back next week.’” (15339)
Researcher’s analysis: “To PC, agent said that ‘the apartment
would be rented by the end of the week’ because they have
enough applicants whereas to C, the one bedroom was avail-
able and information was given on how to view.” (12698)
Theme 2: Fees or rent rates quoted were higher for only the
protected testers.
Researcher’s analysis: “PC tester was told rent for apartment
was $1,325. Control tester was told and got from ad that
rent was $1,005 for the same apartment.” (12165)
Researcher’s analysis: “Agent required 1 month security
deposit from PC tester, none for C.” (6728)
Researcher’s analysis: “Security deposit for Protected Class
tester is $99 to one month’s rent ($1005), for Control
tester is $99 to $300.” (7528)
Theme 3: The agent made overt comments related to disability.
Quotation: [To a question about the process for applica-
tion], “I have no process, I’m pretty busy I have no more
time to talk” and “if she needs rent reminder she needs to
stay in the group home and I have no more time to talk to
you. Good bye.” (14442)
Quotation: “We need to keep the crazies out” regarding
criminal and credit background check. (14532)
Quotation: “Do you think that she should consider renting
an apartment if someone needs to remind her to pay the
rent?” (15342)
Quotation: “She said no, we are not the type of property
that deals with people with, mental cases. I don’t really
know how to say it, but yeah, mental cases.” (11619)
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Theme 4: The agent denied reasonable accommodation
requests.
• Subtheme A: Agent denies the request directly and
unequivocally.
Quotation: “Absolutely No! That’s up to the family to
handle if you want her to rent an apartment here.” (8768)
Quotation: “She told me they don’t allow pets under any
circumstances.” (13433)
• Subtheme B: Agents not knowing the legal rights of
people with disabilities and needing to ask their managers
or consult with others (for example, homeowners’
association) to provide the testers with the answer.
Quotation: Agent said, “she is not sure about the rent re-
minder but she would inquire with the main office about
it and would get back to me.” (12462)
Researcher analysis: “Landlord was unsure about assis-
tance animal and stated that he ‘needs to ask the home
owner’s association.’” (14472)
• Subtheme C: Verbal rent reminder request not accepted,
but alternative methods (for example, e-mail reminder,
written reminder, auto payment plan) offered.
Quotation: “When asked about the rent reminder I was
informed that they only provide a five day written notice
for those who are in jeopardy of being late.” (12108)
• Subtheme D: Assistance animal request was often denied
based on general no pet policy or weight or size policy, or
accepted but with additional pet fee charges.
Quotation: Agent said “she is sorry but no pets are al-
lowed. I said my brother has his doctor’s documentation.
She said she is sorry but they have a no pet policy.”
(12968)
Quotation: “I asked if the fees could be waived and she
[agent] explained that they could not be waived because
they would have to do it for everyone.” (13345)
Researcher analysis: Agent said that “pet over 25lbs is usu-
ally not allowed but it would be ok with documentation.
However, pet fee cannot be waived.” (21474)
• Subtheme E: Agent not acknowledging the need of an
assistance animal for a person with MD.
Quotation: “Support animal is not permissible unless the
resident was blind.” (10985)
Overt discrimination was determined based on these themes,
with results showing that approximately 57 percent of the
protected testers experienced overt discrimination (see Table
A-9). No significant difference was found by type of MD (MI or
I/DD).
Table A-10 summarizes differences in responses between type
of requests and between different disability testers.
Table A-9. Overt Discrimination in Telephone Testing
Disability Yes No Unclear Total n
I/DD 168 (57.3%) 122 (41.6%) 3 (1.0%) 293
MI 202 (57.9%) 141 (40.1%) 6 (1.4%) 349
Totals 370 (57.6%) 263 (41.0%) 9 (1.4%) 642
I/DD = intellectual or developmental disability. MI = mental illness.
Notes: n = 642 pairs. 10 pairs were not coded because disability was
not disclosed during testing. 16 pairs did not have qualitative data
available to code.
Table A-10. Housing Provider Responses to RA
Requests in Telephone Testing
Group
Type of RA
Request
Number of
RA Requests
Responses
Positive Negative
I/DD Rent reminder 147 79 (53.7%) 68 (46.3%)
Service animal 131 70 (53.4%) 61 (46.6%)
MI Rent reminder 182 76 (41.8%) 106 (58.2%)
Service animal 155 90 (58.1%) 65 (41.9%)
Totals 615 315 (51.2%) 300 (48.8%)
I/DD = intellectual or developmental disability. MI = mental illness. RA =
reasonable accommodation.
Notes: n = 615 pairs. 37 protected testers were not included in the
analysis because they did not request RA during their testing.
Quantitative Analysis of Status of Further
Communication
Coding of the status of further communication with the land-
lord revealed that the protected testers experienced significantly
more closed-door or negative communications, whereas control
testers experienced more open-door, positive communications.
Table A-11 summarizes the disposition of closed-door versus
open-door responses among the control group testers and
protected class testers.
Table A-11. Open Door/Closed Door in Telephone
Testing
Response
Control
Group
Protected
Group
McNemar’s
p-Value
Open door 571 (88%) 311 (47.7%)
0.000
Closed door 46 (6.4%) 205 (31.4%)
Unclear 35 (5.4%) 136 (20.9%)
Note: n = 652 pairs.
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In-Person Testing Findings
Qualitative Themes With Quantitative Analysis:
Subtle Discrimination
During in-person testing, six themes emerged related to subtle
discrimination against the protected tester. These themes were
(1) more urgency, priority, or prompting of further action for
control tester to submit an application, follow up, or continue
the rental process; (2) more encouraging to control tester or
more discouraging to protected tester; (3) more friendly, infor-
mal, or personalized with control tester or more formal or less
personalized with protected tester; (4) agent requested more
effort or information from protected tester before moving for-
ward; (5) agent made him or herself more available to control
tester; and (6) agent (potentially inadvertently) discriminated
against protected tester by asking about disability or discussing
disability in a discouraging way.
The themes and accompanying subthemes that emerged from
the data are outlined in the following list and are followed by
quotations that epitomize them. Similar to telephone testing
data, in-person testing data were taken from tester field notes
that testers wrote on completion of the test. The quotations
that follow each theme are field note excerpts, or the tester’s
own words describing the interaction with the agent. Research-
er analyses are interpretations or summaries of the tester field
note excerpts.
Theme 1: More urgency, priority, or prompting of further
action for control tester to submit an application, follow
up, or continue the rental process.
• Subtheme A: More prompting or urgency for control
tester to continue the rental process.
Researcher analysis: “The agent told the control tester to
please give him a call when they make the decision, that
they won’t find a better unit, and that the unit may go fast.
The agent did not say these things to the protected class
tester.” (16213)
• Subtheme B: Agent shows priority to control tester by
requesting more contact information from them.
Researcher analysis:The control tester was asked to provide
their ID, phone number, and email before the tour while
the protected class tester was only asked to provide their
ID. This is evidence of being more interested in following
up with or giving priority to the control tester.” (14056)
Theme 2: More encouraging to control tester or more dis-
couraging to protected tester.
• Subtheme A: More units or amenities shown, more options
offered, or both to control tester.
Researcher analysis: “The control tester’s tour included two
apartments, the business center, mailroom, and gym area
while the protected class tester’s tour only included one
apartment. Second, the protected class tester was offered
one apartment while the control tester was offered three
apartments.” (14082)
• Subtheme B: More positive information given about the
unit, community, or rental process to control tester or more
negative information given to protected tester.
Researcher analysis: “The control tester was given notes on
floor plans and the protected class tester received verbal
information only. Also, the control tester was told about more
amenities (parking, business center, dry cleaning service,
package receiving service, storage facilities, security deposit,
close to everything including grocery store), while the
protected class tester was told about fewer amenities (close
to metro, gym) and was also given extra discouraging infor-
mation (that utilities are not included in the rent).” (14082)
Researcher analysis: “The protected class tester was told
about more income/fee requirements. Additionally, they
were told that the application process would take 4-7 days,
while the control tester was told it would take only 3-4 days.
Finally, the agent told the protected class tester that there
was crime in the building/on the property and did not say
this to the control tester.” (13939)
Theme 3: More friendly, informal, or personalized with
control tester or more formal or less personalized with
protected tester.
Quotation (to control tester): “[The agent] introduced me to
[another staff member] and said that her name was ‘Shirley.’
… We returned to the Leasing Office and Shirley asked me
if I had seen anything that I liked. I said that I had. Lindsay
mentioned to her that I was looking for my first apartment.”
Researcher analysis: “The agent introduced the control tester
to another staff member and initiated conversation between
them, which is evidence of being friendly and personalized
with this tester. The agent did not introduce the protected
class tester to any other staff members. Also, the agent
offered the control tester several decorating tips on what to
do with the space and pointed out the track lighting, which
she did not do with the protected class tester, thus showing
friendliness and personalization once again.” (14082)
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Theme 4: Agent requested more effort or information from
protected tester before moving forward.
Researcher analysis: “The agent told the protected class
tester that no flyers were available and asked the tester to
check the website for them. Conversely, when meeting
with the control tester, ‘went over to a file and retrieved
a flyer which listed information about the apartments,
including their features, rental rates, fees, and what was
needed to apply.’” (14619)
Theme 5: Agent made himself or herself more available to
control tester.
Researcher analysis: “The agent opened the unit door
and left the protected class testers to look around the
(smelly, uncleaned) unit by themselves. The control tester
was accompanied by the agent when viewing the unit.
Additionally, the agent provided the control tester with
her name, phone number, and office hours, but only
provided the protected class testers with her name and
phone number but no office hours.” (14619)
Theme 6: Agent (potentially inadvertently) discriminated
against protected tester by asking about disability or
discussing disability in a discouraging way.
• Subtheme A: Agent questions protected tester’s competence.
Researcher analysis: “The agent addressed the protected
class companion tester when asking/answering questions,
rather than speaking with the tester with a disability, who
was the one actually seeking to rent the unit.” (15082)
• Subtheme B: Agent makes other assumptions about
protected tester due to their disability.
Researcher analysis: “The agent mentioned Section 8 housing
to the protected testers, who replied by saying they were
actually looking for market rental housing, not Section 8
housing. Even after the testers made this clarification, the
agent still mentioned Section 8 housing a second time.”
(13783)
Based on these themes, subtle discrimination was coded (Table
A-12). In all, 45 protected testers (54.2 percent) experienced
Table A-12. Subtle Discrimination in In-Person Testing
Disability Yes No Unclear Total
I/DD 23 (47.9%) 24 (50.1%) 1 (2.0%) 48
MI 22 (62.9%) 13 (37.1%) 0 (0.0%) 35
Totals 45 (54.2%) 37 (44.6%) 1 (1.2%) 83
I/DD = intellectual or developmental disability. MI = mental illness.
Notes: n = 83 pairs. 18 pairs did not have qualitative data to code.
subtle discrimination during their visit to the apartment, with
a higher percentage of subtle discrimination (62.9 percent)
experienced by testers with MI.
Qualitative Themes With Quantitative Analysis:
Overt Discrimination
In in-person testing, similar themes to those in telephone testing
emerged related to overt discrimination; however, reasonable
accommodation requests were not done during the in-person
testing.
Theme 1: Only the protected tester received a negative
response about the availability of the unit.
Researcher analysis: “Units were not available for PC to
view. The agent went to make copies of PC’s ID before
showing the units, talked to another staff for 3-4 mins, and
came back out saying that contractors are working in both
units thus units so not available for viewing. No further
invite was offered to come back to see the units after the
work is done. C was able to view units.” (14284)
Theme 2: Fees or rent rates quoted were higher for only the
protected testers.
Researcher analysis: “To C agent said that there is no security
deposit and now they do non-refundable move-in fee
of $200. PC was told that there is a one month security
deposit ($1005).” (14283)
Theme 3: The agent made overt comments related to disability.
Researcher analysis: “Agent inquired about nature and
severity of disability. Agent asked what kind of disability
PC has.” (16521)
Table A-13 shows the analysis of occasions of overt discrimi-
nation. Far less overt discrimination occurred in the in-person
testing than in the telephone testing. Out of 83 testers, 11 pro-
tected testers (13.3 percent) experienced overt discrimination.
The discrimination rate was higher with testers with MI.
Table A-13. Overt Discrimination in In-Person Testing
Disability Yes No Unclear Total
I/DD 4 (2.1%) 43 (89.6%) 1 (2.1%) 48 (100%)
MI 7 (20.0%) 28 (80.0%) 0 (0.0%) 35 (100%)
Totals 11 (13.3%) 71 (85.5%) 1 (1.2%) 83 (100%)
Notes: n = 83 pairs. 18 pairs did not have qualitative data to code.
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Quantitative Analysis of Status of Further
Communication
Coding of the status of further communication with the
landlord shows that the protected group had slightly more
occasions when further communication was closed, but the
differences were not significant (Table A-14).
Table A-14. Open Door/Closed Door in In-Person
Testing
Response
Count (Percent)
Control
Group
Protected
Group
McNemar’s
p-Value
Open door 81 (97.6%) 78 (94.0%)
0.250
Closed door 2 (2.4%) 5 (6.0%)
Notes: n = 83 pairs. 18 pairs did not have qualitative data to code.
Discussion and Conclusions
This mixed-methods approach to qualitatively analyzing data,
followed by summarizing findings quantitatively to examine
differences between people with and without MD in market
rental searches, produces new and significant findings that
further document specific examples and frequencies of both
subtle and overt housing discrimination against people with MI
and I/DD. These findings, including implications for education
and training of housing providers on the FHA and specifically
on reasonable accommodations based on MD within rental
housing, are summarized in this section.
Telephone Testing
• Some agents specifically cited the FHA but misinterpreted
it. They said that they follow the FHA and, therefore, they
cannot give anyone special treatment—they need to treat
everyone the same. This finding seems to show progress in
that they are aware of the FHA and are trying to follow it,
but more education about disability reasonable accommo-
dations is needed.
• A trend that emerged was that, with some protected testers
with I/DD, the agent appeared excited about renting the
unit to the tester and would cite positive safety amenities
of the unit and building (for example, gated community)
but would later ask for extra eligibility requirements,
fees, or verification. This practice seems to show intent to
initially appear fair, encouraging, and open to the tester
but to later subtly discriminate by making it more difficult
for protected testers to rent.
• Some agents did not know about their ability to approve
a reasonable accommodation and had to ask a manager
before providing the protected tester with an answer. In a
few cases, however, the agents asked the manager while on
the call and then approved the reasonable accommodation
request. This finding shows that, although many agents
are still not trained in fair housing requirements, some are
making the effort to ensure they are giving the prospective
tenant the correct answer. Also, the managers in these
cases are knowledgeable about the FHA and reasonable
accommodations, which demonstrates the positive effect
the law has had in recent years.
• For protected testers who asked for an assistance animal
reasonable accommodation, some agents would ask
questions related to the building’s pet policy. For example,
some agents asked the breed or size of the animal, and,
although the agents ended up approving the reasonable
accommodation request because the tester’s animal fit
the pet policy parameters, this request would likely have
been denied if the tester had a different assistance animal
that did not fit general requirements. This practice shows
potential discriminatory behavior, but it did not play out
in these particular cases due to the tester’s scenario rather
than the agent’s decision or behavior.
Both Telephone and In-Person Testing
• Protected testers were often told that an application fee
would be charged for each adult applicant, whereas control
testers were told about this extra fee less often. Even when
protected testers clarified that only the person with a
disability would be applying for and renting the unit, some
agents still felt the need to reiterate this additional fee.
Differences Detected
• Overt discrimination practice was found to be much more
likely in telephone testing (57 percent) than in in-person
testing (13 percent). One potential explanation of the
lower overt discrimination rate in in-person testing is
that, in in- person testing, the testers had already made an
appointment in advance and knew the unit was ready to
be viewed. In telephone testing, however, many protected
testers were told that units were not available compared
with control testers who were given information about
available units. Open door/closed door analysis supports
that a significant difference in unit availability exists
between control and protected testers.
• Subtle discrimination occurred to more than one-half of
the protected testers in both telephone (63 percent) and
in-person testing (54 percent). During in-person testing,
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agents could not overtly discriminate because the testers
were already there to view the unit, but the agents still
practiced subtle discrimination with the intention of
discouraging the protected tester from taking the next step
or as a result of asking about MD.
• During in-person testing, testers with MI showed higher
discrimination rates than testers with I/DD in both subtle
and overt discrimination, whereas during telephone testing
discrimination rates against testers with MI and I/DD
were similar. Given the fact that the in-person tests were
conducted by persons with MI and I/DD, as opposed to
the telephone tests, which were conducted by proxies, this
observation adds weight to the notion that persons with
MI experience higher rates of housing discrimination when
compared with persons with I/DD.
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