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Notes Toward Improving Program Reviews
by Edward Schiappa
Associate Dean
The Graduate School
January 2000 Draft
Executive Summary
Across the nation, academic program reviews
in general and graduate program reviews in particular are being rethought
and revised. The primary problem is that there is often a gap between
such reviews and the everyday institutional structures concerned with
program planning and resources. Reviews imposed "from above" are too often
treated as a nuisance rather than as an opportunity. To improve this situation
at the University of Minnesota, the following recommendations are forwarded
in this report:
- Augment the current review approach with annual "departmental profiles" collected through a web-based instrument and included as a supplement to departments' annual compact documents.
- Increase the range of review process options, including the use of "focussed," internal, and "mini" reviews.
- Modify the calendar cycle approach to increase the ease of programs to invite a review out of sequence, and increase the ease of programs to obtain an exemption from a review.
- Increase the role of the budgetary college in organizing and conducting the reviews. The Graduate School should limit its role to those portions of the review pertaining to the graduate programs of the department.
- Increase the role of the Provost's Office in organizing and conducting the reviews. Specifically, reviews should be conducted officially under the auspices of the Provost's Office in conjunction with the Graduate School and the budgetary college.
- There should be an additional consultation involving the Provost's Office, the collegiate dean, and a Graduate School representative before and while reviews are being organized.
- Except in the case of special requests, the current suspension of reviews should continue for an additional year.
Notes Toward Improving Program Reviews
Introduction
This report was drafted in response to a request
by Vice President for Research and Graduate School Dean Christine M. Maziar
to evaluate the current practices of program review and to identify possible
improvements. The opportunity for an evaluation was created when Dean
Maziar suspended most department and program review activities while the
University made the transition to semesters.
The report is informed by research and interviews conducted
by the author with a number of stakeholders.
- Appropriate present and former deans and directors of the Graduate
School.
- Deans from the University's Schools and Colleges.
- Various faculty, students, and staff from programs recently reviewed.
- The Council of Graduate Students.
- Various University data managers and planning analysts.
Materials from other institutions and organizations interested in graduate
program review were solicited and reviewed including:
- The American Association of Higher Education project on program review.
- The Council of Graduate Schools.
- The Association of American Universities.
- Selected graduate schools identified as having model review programs.
My research was supplemented in valuable ways
by a draft report funded by the Pew Colloquium on Quality Assurance titled
Evaluation of Academic Departments: A Strategy Paper published
in 1999 by Jon F. Wergin and Judi Swingen (hereafter cited as Wergin &
Swingen) and by Strategies for Change and Improvement: The Report of
the Task Force on Accreditation of Health Professions Education, also
published in 1999.
Why evaluate the program review process now?
For the most part, the pause in program review afforded by semester transition
is simply a good opportunity to see if the process could be improved.
Also, there is a fairly widespread belief that the University is not always
getting its money's worth from the current program review process. Most
departments appear to view program review as something to be endured and
that rarely produces tangible results. The relative benefit of the program
review process, for most participants, does not seem to outweigh the considerable
time and effort that goes into reviews.
Some of the core recommendations in this document
can be found in the 1992 "Report of the Committee to Review the Graduate
School," better known as the Johnson Committee Report. That report called
for regular data collection "relevant to the assessment of program performance"
(p. 11). Such an initiative is consistent with President Mark Yudof's
"Workplan" for 1999-2000 in which he calls for "a more data-driven environment
and management-oriented system for the collection, analysis, and dissemination
of institutional data" and for continued implementation of the compact
planning agreements (p. 3). Accordingly, this is an opportunity to improve
a process that could be of considerable benefit to the institution.
A caveat is in order at this point: This report
does not pretend to be a detailed or exhaustive analysis of all aspects
of the current review process. It is unavoidable in a report such as this
that the descriptions are oversimplified and that there are notable exceptions
to most of the generalizations made here. Nonetheless, I believe that
it is accurate to say that "most" Deans, chairs, and programs share the
perceptions summarized within this report.
Attitudes Toward the Current Review Process
The goal of program review is to assess quality
and to aid planning. According to the Protocol for Program Reviews
under the aegis of the Graduate School:
The goals of a review and evaluation include:
- assessment of the health and vitality of a program,
- determination of its strengths and weaknesses,
- analysis of its present effectiveness in terms of stated objectives,
- critical examination of program objectives in view of present or anticipated
circumstances, and
- recommendations that develop a course of action to maintain and foster
strengths, and to remedy weaknesses determined in the review process;
or, on occasion, to close programs. (p. 1)
Reviews are an opportunity to assess the strengths
and weaknesses of individual programs and departments and to help plan
for the future. Such assessments are important not only for the department
but also for the Graduate School, the respective school or college, and
the Provost's Office. The problem is that there is a widespread belief
that our current program review procedures provides less "added value"
to the quality assurance process than they should.
I believe the problem with the current review
process is partially structural, partially cultural. In general, program
review works best when the individual college and program buys into the
review process and sees it as an opportunity rather than as a nuisance.
For a variety of historical reasons, the review process is currently
viewed by most programs and collegiate deans as more of a compliance issue
than as a productive opportunity to evaluate and improve programs.
In my research, every single review that was referred to as a success
was the result of fortunate timing where the program was going through
a transition and wanted outside guidance. Otherwise, most reviews were
seen as having little value. I believe this is true for several reasons:
First, the review process is run from the
top-down. Though individual departments and programs can request a review,
the standard comprehensive review is typically initiated by the Graduate
School according to a random calendar cycle. Because most reviews are
imposed rather than invited, a compliance mentality is quite common. As
noted by Wergin & Swingen, the impacts of program reviews are, as a result,
"generally modest" (p. 4).
Second, most reviews take place only about
once every ten years. As a result, such reviews are not integrated into
the culture of the departments and colleges as part of an on-going process
of quality assurance and self-assessment. Program reviews are seen as
"one-shot affairs, not well integrated into the life of the institution"
(Wergin & Swingen, p. 4). At the current time at the University of Minnesota,
for example, there is no explicit or obvious institutional connection
between program review and strategic/budgetary planning process, whether
in annual compact discussions or in formulating significant new budget
initiatives for the legislature.
Third, the self-studies departments are required
to do are felt by many to be a very time-consuming exercise in futility.
Though some departments indicate the process of self-study was a valuable
exercise in reconsidering the department's identity and future, most view
the self-study as a nuisance. With only one exception, collegiate deans
and members of external review committees commented that the self-studies
generated are often "useless" because they are too long and do not include
what deans and reviewers feel is valuable information. There is a widespread
belief that "no one reads the self-studies" after they are completed.
Fourth, the most important agents of change
within a department or program are the faculty, and the vast majority
of faculty feel negatively or indifferently about program review. Such
attitudes are not surprising. Faculty are reviewed annually for their
accomplishments as individual teachers and researchers. There is rarely
reward and thus motivation to invest in collective action to improve the
department. As Wergin & Swingen note, "Usually faculty work alone, and
especially in larger institutions they are rewarded according to standards
of quality dictated by their disciplines, not by standards specific to
their institutions or departments" (p. 2).
Fifth, in most (though not all) cases collegiate
deans do not believe external reviews produce much value. The strongest
form of this attitude was expressed by one dean in roughly the following
fashion: "The self-studies are self-serving and defensive, departments
pick friends as their outside reviewers, and the whole thing is approached
as an occasion to press for more resources." Several deans claimed that
they had never learned anything from an external review team that they
did not already know about a department.
There were other criticisms of the review
process that came up that will be discussed below within the context of
specific recommendations.
While there are widely held negative feelings
about program reviews, no one ever urged that we simply abolish them.
Almost invariably someone would bring up an example of some insight that
was gained or benefit derived from a well-timed review. Thus, the challenge
is to improve the process so that the goal of quality assurance is better
met and all concerned feel that reviews are worth their time and effort.
I should note also that there is a difference between a "nuisance" and
a "major problem." No one I spoke to felt that there is a crisis or major
problem being caused by the current review process. Furthermore, deans
who already run their own program reviews-such as in the Medical School,
Law School, and School of Dentistry-are quite content with their current
procedure. But concerning those reviews administered by the Graduate School,
there is a good deal of sentiment that we could be getting much more for
the current investment of time and money.
The remainder of this report will consist of a series
of recommendations and supporting rationale. Some recommendations overlap
while others are quite independent. Collectively the recommended changes
constitute a major departure from the current review process. They invite
a significant institution-wide change in the way program quality is assessed.
Summary of Recommendations
- Augment the current review approach with annual "departmental profiles"
collected through a web-based instrument and included as a supplement
to departments' annual compact documents.
- Increase the range of review process options, including the use of
"focussed," internal, and "mini" reviews.
- Modify the calendar cycle approach to increase the ease of programs
to invite a review out of sequence, and increase the ease of programs
to obtain an exemption from a review.
- Increase the role of the budgetary college in organizing and conducting
the reviews. The Graduate School should limit its role to those portions
of the review pertaining to the graduate programs of the department.
- Increase the role of the Provost's Office in organizing and conducting
the reviews. Specifically, reviews should be conducted officially under
the auspices of the Provost's Office in conjunction with the Graduate
School and the budgetary college.
- There should be an additional consultation involving the Provost's
Office, the collegiate dean, and a Graduate School representative before
and while reviews are being organized.
- Except in the case of special requests, the current suspension of
reviews should continue for an additional year.
Recommendations and Rationale
- Augment the current review approach with annual "departmental
profiles" collected through a web-based instrument and included as a
supplement to departments' annual compact documents.
Rationale: Program quality cannot be accurately ascertained
and assured with a review only once per decade. Rather, those metrics
that are felt to be important indicators of program effectiveness
and efficiency can and should be identified and utilized on an annual
basis as part of a process of continuous quality assessment. In particular,
schools and colleges (including the Graduate School) should collect
appropriate data for each program that is, in turn, routed to appropriate
administrators involved in on-going policy and budget planning.
To some extent current budgetary and compact planning already
involves departments and programs regularly assessing strengths, weaknesses,
directions for the future, and resource needs. The challenge is to
include in such annual conversation the issues and data appropriate
for quality assurance and improvement.
This initiative is consistent with a recommendation made by
the Johnson Committee in 1992 to conduct "annual audits" of graduate
program data "such as GPA and GRE scores of incoming students, time
to completion of degree recipients, and the progress of cohorts through
a program" (p. 13).
Some colleges already routinely require collection of departmental
data. CLA, for example, submits a list of questions to all departments
each year prior to budget meetings. CLA's questions do not include
a call for quality-assessment indicators, but it would be fairly simple
to add such questions. By contrast, CBS maintains a "Data Book" with
various quality indicators that normally are collected only through
once-per-decade reviews. Currently the Graduate School requires various
performance indicators be reported by programs through a web-based
survey that could serve as a model for other administrative units.
Almost any data that an administrator would want is being collected
by someone-the point is for that data to be processed and presented
on a more regular basis. Accordingly, the suggested change here involves
logistics more than policy.
The point here is to begin to change the culture. Given
the relative ineffectiveness of once-per-decade reviews for monitoring
and assuring quality, the institution must more fully embrace the
idea that quality assurance and improvement are continuous processes.
Some departments produce Annual Reports that utilize various indicators
of excellence to demonstrate program effectiveness, while others will
only produce or consider such data if prodded. The goal here is to
identify those performance indicators we feel are important and to
be sure that they are collected and distributed to appropriate university
offices on an annual basis. As Wergin & Swingen note, "the less the
evaluation of departments is controlled by central administration,
the less it is couched in terms of a product (that is, a report or
series of recommendations) rather than as a process that contributes
to continuous improvement, the more credible, and thus more effective,
the evaluation is likely to be" (p. 11).
Such an initiative is also consistent with the Task Force
on Accreditation of Health Professions Education's recommendations
for improving the accreditation process. In their report, Strategies
for Change and Improvement, they suggest that "Commitment to continuous
improvement should be part of the culture of health professions education,
and processes related to accreditation should be integrated into everyday
activities rather than conducted periodically as burdensome, externally
imposed mandates" (p. 18).
Concretely, what would on-going quality assessment entail
at the University of Minnesota? The substance of this suggestion is
to take the sort of program data now collected once every ten years
(or so) and make sure it is reported annually to the relevant administrators
and in annual program "compact" policy and budget planning documents.
This information includes such items as enrollment figures, faculty
teaching efficiency and effectiveness, research and grant productivity,
etc. There is not so much need for new data (though the need for new
categories may emerge) as it is the need to collect and distribute
data pertaining to quality on a more regular basis. This is an important
point because if this recommendation is perceived to be a large new
burden on colleges and schools there will be resistance.
For the Graduate School, this recommendation means initially
to continue to develop the web-based survey as an instrument to collect
performance indicators and to utilize such data in on-going policy
and budgetary planning. At the University of Iowa, traditional program
reviews are supplemented with a statistical "Profile" created by the
Graduate College for use "as the basis for consideration of possible
enhancements, reductions or elimination of programs" (p. iii). We
should examine Iowa's approach carefully and consider adding to our
survey components found in Iowa's profile that would enhance our quality
assessment.
For the provost's office and for some collegiate deans, this
recommendation requires the creation of a list of certain baseline
indicators. Attached is a draft document that describes the performance
indicators that could become part of an annual supplement to departments'
compact planning documents. I suggest that the Provost's Office and
the Graduate School, in consultation with the collegiate deans, create
a web-based instrument similar to what we have in the Graduate School
that would allow individual programs and departments to create an
annual "profile" similar to what one might produce in an annual report.
Such profiles should be relatively simple and straightforward, designed
to identify particularly outstanding achievements by programs as well
as to report routine data concerning teaching, research, and service.
I should note that the deans with whom I shared this idea
were supportive of it. Some deans felt that they already has such
profiles in place, while others acknowledged the need to improve their
data collection process.
- Increase the range of review process options, including the use of "focussed,"
internal, and "mini" reviews.
Rationale: The Graduate School should not try to make one
size review fit all programs. That is, the Graduate School should
encourage flexibility in terms of using different sorts of reviews,
including a greater use of internal reviews where faculty from other
University of Minnesota programs are brought in to review a program,
or where a team of one or two outside reviewers are combined with
one or two home faculty to conduct a more focussed, "mini" review
of only those aspects of the program that the dean and faculty of
the program feel needs the most attention.
Reviews generally should be focussed rather than comprehensive.
The chairs, faculty, external reviewers, and deans I interviewed all
agreed that reviews are almost never thorough and comprehensive because
of the time pressures involved. Typically, in a Graduate School-initiated
review, the External Review Committee is given an extensive list of
questions that tend to be comprehensive in scope. These questions
are rarely all answered, or if they are many of the answers are very
brief. Rather that set up the review to fail to meet its stated goals,
or run the risk that the ERC is spread too thin and does not devote
enough time to the most pressing concerns of the program, reviews
should be focussed on the key issues that the relevant deans and faculty
agree deserve most attention.
A number of the graduate programs associated with health and
professional schools undergo periodic accreditation reviews. While
some deans expressed a preference to keep program review and accreditation
processes separate, others, including Dentistry, Public Health, and
Nursing were strongly in favor of smaller, focussed reviews that could
be coordinated with accreditation. Such a review would focus just
on those parts of the graduate program that are not covered by accreditation.
For example, in the coming year the School of Nursing will undergo
accreditation review of its M.S. program but not its Ph.D. degree
program. Dean Edwardson suggested that it would be easier on the program
to have its Ph.D. program reviewed now when they have gathered a good
deal of data about the School of Nursing, as opposed to a review timed
as a result of a random calendar cycle. In short, an added advantage
of focussed reviews is that they are much easier to "piggyback" to
accreditation reviews than a comprehensive review would be.
The 1992 Johnson Committee report's recommendation #10 includes
such suggestions as more focussed reviews and periodic internal reviews
(pp. 12-13).
Focussed reviews should involve the ERC members in the creation
of a schedule for their on-campus visits, since the current template
for such visits is not a good fit for a focussed approach and tend
to spread ERC members' time too thin.
As a logistical improvement, the University of Minnesota should
consider purchasing laptop computers for ERC use while on campus that
has the focussed questions already loaded. Such laptops could also
contain digital copies of the program's self-study and other data
that may be useful to have convenient for ERC members.
- Modify the calendar cycle approach to increase the ease of programs to
invite a review out of sequence, and increase the ease of programs to
obtain an exemption from a review.
When specific program reviews were praised, it was always
due to fortuitous timing. Programs are most interested and willing
to "buy into" a review process when it recognizes that there is a
significant problem or faces a transition of some sort. Deans praised
those reviews that happened at a time when there was a felt-need for
outside consultation. On the other hand, programs who felt that the
timing of a review was inopportune engaged in various strategies to
resist the review including, in some cases, refusing to write a departmental
response after the review was over.
There is no particular merit to a random calendar approach
except that it allows the relevant administrators to avoid responsibility
for the timing of a review. Furthermore, once-per-decade reviews are
too infrequent to assurance quality programs.
Accordingly, Deans and program chairs should be encouraged
to invite reviews when there is a felt-need for them. This is already
an option, but it is an option that deserves to be reemphasized. Additionally,
when a program comes up in the random calendar cycle system, the program
should be allowed to be "exempted" from review if the relevant collegiate
Dean, the Graduate School Dean, and the Provost's Office all agree.
- Increase the role of the budgetary college in organizing and conducting
the reviews. The Graduate School should limit its role to those portions
of the review pertaining to the graduate programs of the department.
The Board of Regents' Policy makes it clear that all college
constitutions should include a provision that makes the collegiate
dean responsible "for the development and periodic review of departmental
programs." Indeed, the one college constitution I researched- CLA-specifies
that the Dean's responsibilities "include continuous review of departments,
programs, and schools within the college." The Graduate School's own
constitution similarly gives the Dean executive responsibility for
the review of graduate degree programs and their faculties (Article
II-4-k).
Accordingly, the most appropriate scope of reviews organized
and initiated by the Graduate School would be limited to graduate
educational efforts. The tradition of having the Graduate School "staff"
most departmental reviews has evolved to the point that the Graduate
School is responsible for initiating, coordinating, and funding such
reviews. Unfortunately, such a tradition has led to the problematic
perception that the reviews are "owned" by the Graduate School.
Despite the oft-cited caveat that the Graduate School merely
staffs program reviews that are supposed to be comprehensive in scope,
there is a widespread perception that these are "Graduate School reviews"
that focus primarily on graduate programs. This perception is reinforced
by the fact that during site visits the Graduate School's presence
is rather significant compared, for example, to the Provost's Office.
During the opening and closing meetings there tends to be a heavy
emphasis on graduate-related issues. Sometimes, of course, the graduate
program should be the main focus. The problem is that there
is a mistaken impression that we "own" the reviews and that the graduate
program is our primary point of interest.
There are several deans who are under such an impression,
and it is safe to assume that many chairs and faculty believe similarly.
It is also a mistaken impression held by many external reviewers unless
and until they are told otherwise. Such a perception is symptomatic
of a mentality that sees reviews as merely a matter of compliance
rather than an opportunity for reflection and change.
The best reason for locating the primary responsibility for
organizing and conducting reviews in the budgetary college is to enhance
the interface between program reviews and the most appropriate institutional
structures involved with planning and resources. A review is pointless
if those best positioned to effect change are unwilling or uninterested
in doing so. The current practice leads to rather undesirable
though unintended problems. In one case a collegiate dean told me
that she felt her most pressing concerns about two departments were
not addressed in a recent review and so a valuable opportunity for
significant change was lost. In other cases departments or programs
are skeptical of the review process because they believe a dean will
simply ignore ERC suggestions if they do not fit with that dean's
plans. In any case, it is reasonable to infer that deans are less
invested in the conduct and results of program reviews than they would
be if they had more intimately involved in financing and organizing
the review.
What sort of structures would this recommendation require?
In some units, this recommendation is already the status quo. No changes
would be necessary for the Law School, Medical School, Dentistry School,
or the College of Agriculture, Food, and Environmental Sciences, for
example. Probably the most significant change would be for the College
of Liberal Arts, but this is also the College where the review process
is most often seen as a nuisance. Reviews within CLA and all colleges
should be limited to those that the relevant deans are genuinely interested
in being involved with and committed to following through on the review's
outcomes.
To be sure, the Graduate School can and should play various
sorts of supporting roles, including the training of relevant associate
deans to conduct their own college's reviews and to participate in
those portions of the reviews that pertain to the department's graduate
programs. For example, if it is decided to piggyback a focussed review
of a graduate program with an accreditation review of an undergraduate
or graduate professional school, it makes sense for the Graduate School
to take responsibility for organizing and funding the graduate program
review in coordination with the relevant dean's office. Also, the
responsibility for coordinating reviews of interdisciplinary graduate
programs may rest with the Graduate School. However, the primary locus
of control for more comprehensive departmental review ought to be
in the hands of the relevant collegiate dean.
While I believe this suggestion may receive the most opposition
of all the recom-mendations, I am convinced that if we want program
reviews to improve dramatically in quality and effectiveness, this
is the single best step to take to accomplish such a goal.
- Increase the role of the Provost's Office in organizing and conducting
the reviews. Specifically, reviews should be conducted officially under
the auspices of the Provost's Office in conjunction with the Graduate
School and the budgetary college.
Rationale: The rationale for this suggestion is similar
to that of the previous point. As noted above, we in the Graduate
School understand that our function is to staff and organize comprehensive
reviews of programs. But most people outside of the Graduate School
do not understand this and believe that these are "Graduate School
reviews" that are primarily focussed on the graduate program. The
result is problematic in part because the Provost's Office is not
involved in the review process as thoroughly as it should be. Also,
the perception that the focus is on the graduate program sometimes
results in a disconnect between the department's felt-need to focus
on resources and faculty lines and the external review committee's
felt-need to assess the graduate program quality. More than one dean
also expressed the feeling that more emphasis needs to be given to
the undergraduate program of departments under review.
By conducting the reviews officially in conjunction with the
Provost's Office and the budgetary college we can reinforce for all
concerned the fact that these reviews are not limited to the graduate
programs involved. Furthermore, we can enhance the connection between
the improvements needed that are identified in the review process
and those university offices (collegiate deans and provosts) who are
in the best budgetary and policy position to facilitate such changes.
Such a change would not require additional resources though,
depending on how many external reviews occur in a given year, the
number of meetings that require a provost's participation could increase.
- There should be an additional consultation involving the Provost's Office,
the collegiate dean, and a Graduate School representative before and
while reviews are being organized.
Rationale: This recommendation simply sums up the process
implications of the previous two recommendations. Currently a review
might be initiated at the request of a dean, a department chair, or
the Graduate School. The first organizational meetings typically involve
only representatives of the department and the associate dean of the
Graduate School who administers reviews. Prior to such a meeting,
there should be consultation with the appropriate collegiate dean
and the Provost's Office to facilitate the process of focussing the
review on issues of particular concern. Such consultation will enhance
the connection between such reviews and subsequent policy and budgetary
planning at the college and university level.
- Except in the case of special requests, the current suspension of reviews
should continue for an additional year.
Rationale: Several deans specifically requested that
reviews be suspended for an additional year. Starting up the process
for fall 2000 means that programs will have to work on self-studies
and lining up external reviews in the coming spring semester. Some
deans felt that this was too soon since many programs have implemented
significant curricular change starting this fall and it will be too
soon to assess the effect of such changes. Furthermore, the fatigue
factor was mentioned since we would be starting up the review process
in the midst of our first year in semesters.
Comments or Questions? Contact Edward
Schiappa at 626-0338 or schia001@umn.edu
1I have met with the following:
Vice President and Graduate School Dean Christine M. Maziar; Associate
Vice President Robert B. Kvavik; Assistant Vice President and Graduate
School Associate Dean Victor A, Bloomfield; Dean Mary Heltsley, College
of Human Ecology; Dean Steven Rosenstone, Associate Deans Ann Waltner,
Michael Hancher, & Barbara Reid, CLA; Dean Alfred Michael & Associate
Dean Robert Howe, Medical School; Dean Robert Elde, CBS; Dean Thomas Fisher,
College of Architecture and Landscape Architecture; Dean John Brandl,
the Humphrey Institute of Public Affairs; Associate Dean Pat Kumar, IT;
Dean Marilyn Speedie, College of Pharmacy; Dean Steven Yussen & Associate
Dean Robert Serfass, College of Education and Human Development; Dean
Jeffrey Klausner & Associate Dean Larry Schook, College of Veterinary
Medicine; Dean Edith Leyasmeyer & Associate Dean John Finnegan, School
of Public Health; Dean Sandra Edwardson, School of Nursing; Dean Michael
Hill, School of Dentistry; Dean Charles Muscoplat & Interim Dean Philip
Larsen, College of Agriculture, Food, and Environmental Sciences; Dean
David Kidwell, the Carlson School of Management; Dean Al Sullivan & Associate
Dean Steven Laursen, the College of Natural Resources.
2IncludingDarwin D. Hendel, Susan M. Grotevant, Lincoln Kallsen, Bradley E. Bostrom, and Peter M. Radcliffe.
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