Discussion
Treating Prison Inmates with Co-Occurring Disorders: An Integrative Review of Existing Programs
John F. Edens, Ph.D.,* Roger H. Peters, Ph.D., and Holly A. Hills, Ph.D.
The tremendous growth in state and federal correctional
populations has focused greater attention on the needs of
mentally ill and substance abusing inmates. Although an
estimated 3±11% of prison inmates have co-occurring
mental health (psychotic and major mood) disorders and
substance abuse disorders, few treatment programs are
described in the literature and there is little available
information regarding effective treatment strategies for
this population. The current study provides an integrative
review of seven `dual diagnosis' treatment programs that
recently have been developed in state and federal prisons.
Many of these have evolved from existing substance abuse
treatment programs and approaches. Key program
components include an extended assessment period,
orientation/motivational activities, psychoeducational
groups, cognitive±behavioral interventions such as
restructuring of `criminal thinking errors', self-help
groups, medication monitoring, relapse prevention, and
transition into institution or community-based aftercare
facilities. Many programs use therapeutic community
approaches that are modified to provide (a) greater
individual counseling and support, (b) less
confrontation, (c) smaller staff caseloads, and (d) cross-
training of staff. Research is underway in three of the
seven sites to examine the effectiveness of these new
programs. #1997 John Wiley & Sons, Ltd.
Behav. Sci. Law, Vol. 15, 439±457, 1997.
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Behavioral Sciences and the Law, Vol. 15, 439±457 (1997)
* Correspondence to: John F. Edens, Ph.D., Mental Health Law and Policy, The Florida Mental Health Institute, University of South Florida, 13301 Bruce B. Downs Boulevard, Tampa, Florida 33612-3899, USA. John F. Edens, Ph.D., and Roger H. Peters, Ph.D., Department of Mental Health Law & Policy, University of South Florida; Holly A. Hills, Ph.D., Department of Community Mental Health, University of South Florida. The authors would like to extend their thanks to the various program directors and program staff whose participation made this article possible: Marcia Baker (Hackberry SAFP), John Burns (Estelle SAFP), Redonna Chandler (Lexington), Merle Friesen, Dorothy Gieger, and Ernie Marshburn (Ventress), Kevin Hormann and Wendy Johnson (Turning Point), James Michaud and Joseph Stommel (San Carlos), and Craig Warrington (Chronic Care Program).
Rapidly escalating correctional populations throughout the country in the past 10
years have led to greater attention to the needs of inmates with mental health and
substance use disorders. Both state and federal corrections populations are
characterized by high rates of these disorders (General Accounting Office, 1991;
Keith, Regier, & Rae, 1992; Pepper & Massaro, 1992; Peters, Greenbaum, Edens,
Carter, & Ortiz, 1997). For example, state prison inmates have lifetime prevalence
rates of schizophrenia, major depression, and substance use disorders that greatly
exceed those detected in the community (Chiles, Von Cleve, Jemelka, & Trupin,
1990; Robins & Regier, 1991). Many prison inmates concurrently meet diagnostic
criteria for major mental health and substance use disorders. Approximately 26% of
substance abusing prison inmates have a lifetime history of major depression,
bipolar disorder, or atypical bipolar disorder, and 9% have a history of
schizophrenia (Cote & Hodgins, 1990). In the absence of specific
epidemiological findings, it is estimated that approximately 3±11% of prisoners
have co-occurring Axis I mental health disorders and substance use disorders
(Peters & Hills, 1993).
Individuals with co-occurring disorders present several unique challenges and
generally have a poor prognosis for involvement in treatment, relative to those
diagnosed with single disorders (McLellan, 1986; Weiss, 1992). In comparison to
others in treatment, individuals with co-occurring disorders have been shown to
experience (a) more rapid progression from initial use to drug dependence (Weiss,
Mirin, Griffin, & Michael, 1988), (b) poor medication compliance (Drake, Osher,
& Wallach, 1989), (c) decreased likelihood for successful completion of treatment
(Siddall & Conway, 1988; Zuckerman, Sola, Masters, & Angelone, 1975), (d)
higher rates of hospitalization and of suicidal behavior (Caton, 1981; Safer, 1987),
(e) and more rapid recurrence of symptoms following release from treatment
(Carpenter, Mulligan, Bader, & Meinzer, 1985; Kay, Kalathara, & Meinzer, 1989).
Within a criminal justice setting, individuals involved in jail substance abuse
treatment who have mental health symptoms have more pronounced difficulties
than other inmates in several areas of functioning, including employment, family
relationships, and medical problems, as well as lower baseline knowledge of
substance abuse treatment principles and relapse prevention skills (Peters, Kearns,
Murrin, & Dolente, 1992).
Several community-based treatment approaches have been developed in recent
years for persons with co-occurring disorders. These vary according to the
theoretical models and disciplinary orientation of the program. Programs emerging
from substance abuse treatment settings include therapeutic communities that have
been modified for co-occurring disorders (e.g., through use of psychoeducational
activities, less confrontation; Sacks & Sacks, 1995). These are highly structured
long-term residential substance abuse treatment programs that are typically staffed
by recovering individuals, focus on lifestyle and personality changes, and have strict
norms regarding participant behavior.
A number of recent studies conducted in community settings have demonstrated
long-term positive outcomes associated with treatment approaches for individuals
with co-occurring disorders. Jerrell and Ridgely (1995) examined a program that
included elements of a Social and Independent Living Skills (SILS) program
(Liberman, Massel, Mosk, & Wong, 1985) and a Behavioral Skills intervention
program, which was compared to intensive case management and 12-step recovery
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models. Participants in the SILS/Behavioral Skills program had significantly greater
improvement in work productivity, independent living skills, social adjustment, role
functioning, and social relations during followup. Co-occurring disorder treatment
programs integrating 12-step services and intensive case management have also
been examined in a seven-year followup (Bartels, Drake, & Wallach, 1995).
Approximately one quarter of participants with alcohol use disorders and a third of
those with drug use disorders achieved sustained abstinence during followup.
Although sample sizes in these studies are rather small, they provide preliminary
evidence of the potential effectiveness of integrated dual diagnosis treatment
approaches.
In recognition of the growing numbers of individuals with co-occurring disorders
in the justice system, several demonstration grant programs and collaborative
projects have been funded by the Center for Mental Health Services (CMHS), the
Center for Substance Abuse Treatment (CSAT), the National Institute of
Corrections (NIC), and the National Institute on Drug Abuse (NIDA). As an
example, the National GAINS Center (Gather, Assess, Interpret, Network,
Stimulate change) was established in 1995 through funding by CMHS, CSAT,
and NIC to assist in improving services for individuals with co-occurring disorders
in the justice system. There have also been advocates for development of
specialized `co-occurring disorder' treatment programs in criminal justice settings
(Pepper & Massaro, 1992; Peters et al., 1992) and for diversion of the mentally ill
and substance abusers from these settings (American Bar Association, 1992;
National Institute on Corrections, 1991; State Justice Institute, 1991; Steadman,
1991; Steadman, McCarty, & Morrissey, 1989).
Despite the growing population of prisoners with co-occurring disorders and
the awareness of the unique treatment needs of this population, the research
literature includes few descriptions of `dual diagnosis' treatment programs in
prisons. A recent survey of state and federal prisons identified only two treatment
programs designed specifically for individuals with co-occurring disorders (Peters
& Hills, 1993). Several other state correctional systems reported that they were
developing similar programs. The same survey found that only three states had
systematic procedures for identifying or tracking prison inmates with co-occurring
disorders.
This review describes current treatment initiatives in state and federal prisons
for inmates with co-occurring disorders and illustrates current trends in
providing services for this population. Goals of the review are to provide
guidelines for the implementation of prison-based dual diagnosis treatment
programs and suggestions for the adaptation of services for inmates with co-
occurring disorders within existing substance abuse or mental health treatment
settings. Key components of prison-based dual diagnosis programs are
highlighted, in efforts to identify common elements and innovative strategies
and approaches to working with this population. Specific program components
reviewed include the following: (a) program admission procedures, (b) treatment
strategies and special program adaptations provided for this population, (c)
program staffing, (d) coordination and linkage with other prison services and
reentry/aftercare services in the community, and (e) program evaluation. Several
common obstacles to effective treatment of co-occurring disorders in prisons are
also described.
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SURVEY PROCEDURES
Programs in this review include two described in a previous survey (Peters & Hills,
1993), those subsequently identified by the National GAINS Center, and programs
identified through correspondence and personal communications with correctional
treatment staff and administrators. Ten programs were initially identified.
However, one program that was previously operated by the South Carolina
Department of Corrections has been discontinued. Another program being
developed by the Florida Department of Corrections is scheduled to begin
operation in mid-1997 and has not begun admitting inmates. A third program, the
Mental Health-Corrections Outreach Intensive Program (M-COIT) in Michigan
provides primarily post-release services such as case management, advocacy,
outreach, specialized dual diagnosis treatment, and vocational counseling and
rehabilitation (Conklin, 1996).
Once the prison programs were identified, information regarding the remaining
seven programs was obtained from structured telephone interviews conducted with
program coordinators and treatment staff. Structured interviews were
approximately 90±120 minutes in duration. Programs described in this report are
located in a federal prison and in six state prisons in different states. Two of the
state prison programs serve felony probationers and parole violators.
PROGRAM DESCRIPTIONS
Dual Diagnosis Unit, Ventress Correctional Facility (Alabama)
This 62-bed program for male inmates is contained within a prison designated
exclusively for substance abuse treatment. The program has been in operation since
1992, and was developed due to increased staff awareness that inmates with co-
occurring mental health disorders were less successful in completing the substance
abuse treatment program. Although serving as a separate unit within the prison,
participants in the dual diagnosis program have frequent interaction with inmates
in substance abuse units. Inmates typically are treated during their last year of
incarceration.
Approximately 60±70% of inmates admitted to the program are diagnosed with
chronic depressive disorders, 10% are diagnosed with schizophrenia, and 15% are
diagnosed with bipolar disorder. Inmates receive approximately 25 to 30 hours
per week of treatment and educational programming during the course of the 15
week program. Treatment services consist primarily of group activities, and
incorporate 12-step principles, psychoeducational components, and relapse
prevention approaches. Core treatment services are similar to those provided to
other inmates in substance abuse treatment but are augmented to address the
special needs of inmates with co-occurring disorders. Given the high rate of
depressive disorders, staff incorporate several psychoeducational classes that
specifically address the management of depressive symptoms, the effects of
substance abuse on depression and other mood disorders, and the importance of
medication maintenance. The dual diagnosis unit is staffed by two full-time
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counselors, a half-time master's level supervisor, and receives consultation from a
psychologist and psychiatrist on a part-time basis. Medical and psychiatric
nursing services also are available on a 24-hour basis through the prison's medical
service.
Crisis Care Unit, Sussex Correctional Institution (Delaware)
Inmates with co-occurring disorders in the Delaware correctional system are
referred for treatment to the Crisis Care Unit, a 40-bed unit located in the
maximum security Sussex Correctional Institution. Although this program was
originally designed for mentally retarded and mentally ill inmates, specialized
services for inmates with co-occurring disorders were developed as greater
numbers of substance abusers were placed in this program. Approximately 75%
of inmates presently have both a chronic mental illness (primarily schizophrenia)
and a substance abuse diagnosis. The program has recently contracted with a
new service provider, Prison Health Services, Inc., and has become more
focused on stabilization of inmates with severe psychiatric conditions rather than
on long-term treatment. A new policy and procedures manual is currently in
preparation.
The length of treatment currently averages from two to three months, although
some inmates with more chronic impairment may remain in treatment for the
duration of their sentence. Treatment services are provided seven days a week by a
mental health counselor, activity therapist, correctional counselor, and a consulting
psychiatrist. The program includes a comprehensive psychosocial assessment,
individual and group therapy, medication monitoring, psychoeducational groups,
relapse prevention, recreational therapy, and individual case management.
Behavioral reinforcement is provided by the program through use of a level
system, in which inmates progress to higher levels of responsibility and privileges
based on compliance with treatment goals and community rules and regulations.
Although the Crisis Care Unit is separated from other institutional programs,
inmates share meals, recreation yard, and religious activities with other inmates.
Turning Point Alcohol and Drug Program: Columbia River Correctional Institution (Oregon)
This 50-bed therapeutic community for women is operated by ASAP Treatment
Services, Inc., and is housed in a 500-bed minimum security state prison for female
and male inmates. The program was initiated in 1990 through a grant from CSAT,
although the program is now supported entirely by the Oregon Department of
Corrections. The program is housed separately from the main prison population
and serves as a pre-release institution for female inmates. The program provides a
five-phased treatment program of six to 15 months duration, contingent upon
inmates' release dates, with a seven to eight month average.
Originally conceptualized as a substance abuse treatment program, mental health
services gradually became included due to the high rates of inmate dropout which
were attributed to untreated Axis I mental health disorders. Approximately 60% of
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inmates in the program are dually diagnosed, including approximately 70% with
post traumatic stress disorder (PTSD), 50% with depression, and 15% with bipolar
disorder. The high rate of PTSD is attributed by staff to a history of physical and/or
sexual abuse that is reported by a majority of the female inmates. Relatively few
inmates (2±5%) are diagnosed with psychotic-spectrum disorders. A minimum of
30 hours of treatment and educational services are provided each week. Treatment
services are oriented towards group sessions, and incorporate substance abuse
education, life skills, and relapse prevention strategies within a therapeutic
community environment. Specific groups for physical and sexual abuse survivors
also are provided for inmates.
The program is staffed by 10 counselors who have different areas of expertise in
assessment, family therapy, milieu therapy, mental health counseling, and primary
and ``transitional'' counseling. Although staff have varying educational backgrounds,
all are certified alcohol and drug counselors (CADCs), in accordance with new
Oregon certification requirements. Four other staff positions (nurse practitioner,
psychiatric nurse practitioner, mental health case manager, and licensed professional
counselor) are provided through the institution's health services department, in
addition to consultation from other psychiatric and medical staff.
Dual Diagnosis Track, Lexington Federal Medical Center (Kentucky)
This is program was designed for 16 male inmates within a 120-bed substance
abuse treatment unit in a large federal prison for inmates with special medical
needs. The dual diagnosis program has been in operation since 1996. The majority
of inmates are diagnosed with major mood or psychotic-spectrum disorders,
although inmates with severe anxiety disorders are also considered for admission.
Inmates typically must be within 36 months of their release date before they will be
considered for admission into the program, which maintains an extensive waiting
list.
Inmates receive approximately 20 hours per week of treatment during the course
of the nine-month program, which consists of three 12-week phases. The program
uses a biopsychosocial model of recovery that incorporates psychoeducational,
cognitive, and relapse prevention approaches in a community environment. In
addition to participation in core program services provided to inmates in the larger
substance abuse unit, inmates with co-occurring disorders are provided specialized
process and educational groups designed to address mental health and co-occurring
disorder issues. Weekly individual therapy sessions and medication compliance
monitoring are also provided.
Two master's level staff serve as primary counselors for the dual diagnosis
program, although inmates interact with several other staff assigned to the larger
substance abuse program. Psychiatric services are provided once weekly through
the institution's mental health unit, where inmates may be referred if they
decompensate during treatment.
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Substance Abuse Felony Punishment Facility-TDCJ Estelle Unit (Texas)
This program provides 130 beds for `special needs' inmates within a 175-bed
modified therapeutic community operated by the Gateway Foundation for the
Texas Department of Criminal Justice (TDCJ). The program was developed as a
result of a large-scale expansion of substance abuse treatment within the state
corrections system, beginning in 1991, which included development of Substance
Abuse Felony Punishment Facilities (SAFPs). The Estelle Unit was developed in
1994, following determination that the needs of individuals with co-occurring
disorders were not being adequately addressed in existing SAFPs. The program was
initially funded through a CSAT demonstration grant but is expected to be entirely
supported by TDCJ in the near future.
Approximately 50±60% of `special needs' inmates have a major mental health
disorder, while the remaining inmates have various medical conditions. Individuals
with severe mental health disorders are given priority for admission. Approximately
40±50% of participants with co-occurring disorders are diagnosed with a major
mood disorder, and 20±25% of participants are diagnosed with schizophrenia. The
three-phased program includes a minimum of 20 hours per week of treatment and
education services over a period of nine to 12 months. Treatment is provided
primarily in groups, and incorporates 12-step principles, chemical dependency
education, and relapse prevention strategies within a therapeutic community
setting.
The program is staffed by two master's level clinical supervisors and 11
counselors, all of whom have completed or are in the process of achieving licensure
in chemical dependency counseling (LCDC). Five nurses and a part-time
psychiatrist also provide services to the program. Although housed in a prison,
the program serves felony probationers and parole violators.
Substance Abuse Felony Punishment Facility-TDCJ Hackberry Unit (Texas)
This 288-bed program is operated by Phoenix House of Texas, Inc., and provides
treatment for women with substance use disorders who are also either pregnant or
have developmental disabilities, chronic medical problems, or Axis I mental health
disorders. Approximately 55% of inmates have a major mental health disorder in
combination with a substance use disorder. The most frequent mental health
diagnoses received by participants are major depression (22%) bipolar disorder
(16%), psychotic-spectrum disorders (13%) and anxiety disorders (5%). The dual
disorders treatment track consists of three phases, and lasts from nine to 12
months.
The program is based on a modified therapeutic community approach that
incorporates psychoeducational programs, women's issues, Alcoholics Anonymous,
process groups, and relapse prevention activities. Treatment is provided primarily
in groups, although individual counseling is also available. Inmates with co-
occurring disorders participate both in encounter groups with other special needs
inmates and in groups addressing specialized dual diagnosis topics. As with the
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Estelle program, the Hackberry program provides services for felony probationers
and parole violators. As part of their conditions of probation or parole, participants
in these programs are sentenced to participate in treatment programs that are
located within correctional facilities.
Dual Diagnosis Unit, San Carlos Correctional Facility (Colorado)
The dual diagnosis program is a 32-bed unit within the 250-bed San Carlos
Correctional Facility, which serves inmates with `special needs'. The program
opened in 1995 and is a modified therapeutic community that provides
psychoeducational, life skills training, and cognitive±behavioral interventions.
Approximately 30±40% of inmates have a psychotic-spectrum disorder and
receive priority admission into the program; approximately 50% of inmates have a
major depressive disorder. The San Carlos program is located in a pre-release facility
in a mixed custody setting. Inmates typically spend eight hours a day in treatment,
educational programs, and work activities within the therapeutic community.
Although the intended program length is approximately 12 months, the duration of
treatment is determined by release decisions made by the parole board.
The dual diagnosis program is jointly staffed by addiction counselors from
Addiction Recovery Programs, Inc., and by mental health and correctional staff
from the Colorado Department of Corrections. Staff include two full-time and one
half-time Certified Addictions Counselors (CACs), a part-time psychologist and
psychiatrist, a social worker, nursing staff, and corrections staff. As part of an
ongoing research and technical assistance grant from NIDA, the program is
expected to expand from 32 to 64 beds in the near future.
KEY ELEMENTS OF CORRECTIONAL TREATMENT PROGRAMS
The following section describes major components of treatment services provided
for prison inmates with co-occurring disorders. Findings from the survey of
correctional programs are summarized to identify common approaches, innovative
strategies, and key issues faced by correctional programs in implementing co-
occurring disorder treatment programs.
Program Admission
Referral and screening
Inmates are usually referred to treatment in three ways: (a) after completion of
screening at a prison intake/reception facility, (b) after referral to either a substance
abuse or mental health treatment program, or (c) after identification of symptoms
while placed in the general population. For the Estelle and Hackberry programs,
screening occurs in the counties in which the probation and parole violators are
adjudicated.
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The method and intensity of screening procedures varies across the prison
programs surveyed, although most use some combination of diagnostic interview
and self-report instruments that address both substance abuse and mental health
symptoms. Commonly used screening instruments and approaches include the
MMPI-2, MCMI-II, Level of Supervision Inventory (LSI), cognitive and/or
academic screening measures such as the Beta IQ and Wide Range Achievement
Test, diagnostic interviews conducted by psychologists or psychiatrists, extensive
psychosocial histories, and self-report drug history questionnaires. Most screening
for co-occurring disorder programs is conducted or supervised by doctoral-level
staff and may be accompanied by review from an `evaluation team'.
Admission criteria
Admission criteria vary considerably across the different co-occurring disorder
programs. Most programs have taken steps to disseminate information regarding
admission criteria to potential referral sources (judges, reception center staff, prison
wardens, and psychology and psychiatry staff) in order to minimize inappropriate
transfers. Diagnosis of a DSM substance use diagnosis, coupled with a DSM
mental health disorder (e.g., schizophrenia, major depression, or bipolar disorder)
usually is required for admission. Although most program participants have major
mental health and substance use disorders, there is a broad range of functional
impairment among participants. The Lexington program also requires justification
from referral sources that an inmate cannot receive adequate treatment in another
substance abuse or mental health program prior to being transferred to their
facility.
Some prison programs' admission criteria are rather broad, requiring only a
history of mental health treatment or psychotropic medication use in combination
with a history of substance abuse in the last year. Others, such as the Ventress
program, develop referral decisions on the basis of the evaluation team's
determination of whether an inmate might benefit from treatment rather than
relying on formal admission criteria. In the Turning Point program, referral
decisions are sometimes based on inmates' requests for treatment services even if
these individuals do not meet defined diagnostic criteria.
Several common exclusionary criteria are used to screen out inmates who are
unlikely to benefit from treatment. These include restrictions based on (a) the
assigned security level of the facility where the program is located (e.g., minimum
security); (b) the severity of medical problems, physical disabilities, or cognitive
impairments; and (c) the severity of psychiatric impairments exhibited, such as
acute symptoms, behavioral problems, or difficulty in achieving stabilization on
psychotropic medication. Inmates in the latter group are sometimes accepted for
admission if it is anticipated that they can be stabilized within a short period of
time. Inmates typically are not excluded from dual disorders treatment programs
unless they express active psychotic symptoms that are disruptive to program
activities or that require consistent staff attention. According to program staff at
most sites, exclusions based on psychotic symptoms occur infrequently. Other than
the Crisis Care Unit, however, few programs surveyed have on-site stabilization
beds available for inmates who are actively psychotic at the time of admission or
who decompensate during the course of treatment. Under these circumstances,
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most programs initiate transfer to specialized mental health units pursuant to
stabilization, at which time they can be reconsidered for program admission.
Assessment
All programs surveyed included an intensive initial period of assessment. During
this period, prior diagnoses are usually reevaluated, structured assessment
instruments and interviews are conducted, medication evaluation is provided,
case managers are assigned, and treatment plans are developed. Typical
assessment methods and instruments include the MMPI-2, the MCMI-II, the
Addiction Severity Index (ASI), the Symptom Checklist-90, diagnostic interviews
conducted by psychologists or psychiatrists, extensive psychosocial and criminal
histories, self-report drug history questionnaires, and various cognitive and/or
academic screening measures used to determine inmates' abilities to effectively
comprehend the services being provided.
Correctional treatment programs differ widely in their use of standardized
assessment and objective diagnostic instruments. For example, the Estelle program
places considerable emphasis on standardized testing, while programs such as
Ventress view this as a relatively inefficient use of staff resources. These different
approaches may reflect the diagnostic heterogeneity of inmates served in the
programs, as well as in the perceived quality and accuracy of initial screenings that
have been conducted. One unique assessment approach used in the Hackberry
program involves use of Global Assessment of Functioning (GAF) scores from the
DSM-IV to place inmates into treatment groups with other inmates at similar levels
of psychosocial functioning. Inmates are placed into one of three levels of
encounter groups based on these scores, which are then used as repeated measures
to assess progress during involvement in the program.
Common Problems in Screening and Assessing Inmates with Co-Occurring Disorders
Screening, referral, and assessment procedures are often complicated due to the
complex interaction of substance use and mental health symptoms. Many co-
occurring disorders are not identified because their symptoms are not detected
during initial screening. These individuals are often placed in mental health or
substance abuse programs due to attribution of co-occurring symptoms to the
disorder that was originally identified. This problem is accentuated by inmates'
reluctance to provide accurate disclosure of their substance abuse history at the
time of admission screening. Another common problem is that inmates may be
mistakenly referred to co-occurring disorder programs because their withdrawal
symptoms mimic major mental health disorders. Due to the complexity of
symptom interaction and the need for an extended baseline assessment (Peters &
Hills, 1993), many initial diagnoses formulated by screening staff are treated as
provisional by staff in dual diagnosis programs.
Use of `gain time' (i.e., reductions in sentence length) as an incentive for
substance abusers to enter treatment also tends to complicate the screening and
assessment process. Under these conditions, many inmates without co-occurring
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disorders will feign or exaggerate mental health and/or substance abuse symptoms
in order to gain admission to treatment. Other inmates will attempt to gain
admission to impress parole boards of their efforts towards `rehabilitation'.
Treatment Interventions, Approaches, and Modifications
Although the prison treatment programs differ somewhat in philosophy and type of
interventions, all endorse the importance of a strong community atmosphere and
include psychoeducational, 12-step, cognitive±behavioral, and relapse prevention
strategies. Several common goals of treatment programs include (a) providing a
highly structured therapeutic environment, (b) destigmatizing mental illness, (c)
focusing on symptom `management' rather than `cure', (d) education regarding
individual diagnoses and the interactive effects of co-occurring disorders, (e)
restructuring inmates' criminal `thinking errors', and (f) developing basic life
management and problem-solving skills. Although all programs provide more
individual case management and counseling than is typically available in substance
abuse programs, the primary treatment modality is group therapy. Specific types of
interventions used include peer-led encounter groups, 'process' groups, 12-step
groups (e.g., Alcoholics Anonymous, Emotions Anonymous), family therapy,
individual case management, behavior modification, cognitive±behavior therapy,
and various psychoeducational groups. Topics of psychoeducational groups
typically address responsible use of medication, mental and physical health
consequences of drug use, symptom interaction of co-occurring disorders, AIDS/
HIV awareness, and life management skills. Dual diagnosis programs for female
inmates at Turning Point and the Hackberry Unit also address specialized topics
such as sexual abuse and trauma, and parenting and relationship skills.
Phases of Treatment
Each program uses a highly structured approach in treating inmates with co-
occurring disorders. Several programs provide specific phases of treatment, usually
consisting of an initial assessment and orientation period, an intensive treatment
phase, and a relapse prevention/transition phase. Programs that do not provide
specific treatment phases still incorporate these three basic components, even
through phases may not be as clearly demarcated. Some programs follow specific
time frames for program length and require completion of all treatment phases for
graduation, whereas other programs have adopted a more flexible approach
regarding length of treatment and criteria for completion.
Orientation
Given the functional limitations of many inmates with co-occurring disorders and
their increased need for structure, a strong emphasis is placed on orientation to
program goals, expectations, rules and guidelines, and to treatment activities in
preparation for their involvement in treatment. The orientation phase usually
consists of a thorough assessment of substance abuse and mental health history and
current symptoms; a review of program policies, rules, and procedures; an
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introduction to the recovery process; assignment of a case manager; and
development of a treatment plan or contract. Programs such as Turning Point
incorporate information from behavior logs maintained by correctional and
treatment staff in developing treatment plans, and require successful completion
of exams before moving to the next phase of treatment. Most programs use the
orientation phase for assessment and development of motivation for treatment. For
example, inmates in the Lexington program complete a `readiness statement'
before moving to the next phase of treatment in order to foster a commitment to
change, while inmates in the Hackberry program begin each day during orientation
with a morning `motivational meeting'.
Intensive treatment
This second phase of treatment usually consists of 20 to 35 hours of individual and
group treatment and education per week, and involves a broad array of cognitive,
emotional, and behavioral interventions. Inmates typically are given homework
assignments and sometimes are tested on materials presented in psychoeducational
groups before being moved into the next phase of treatment. Treatment activities
may be provided with other inmates who do not have co-occurring disorders. In the
Lexington and Hackberry programs, which are embedded within larger substance
abuse programs, participants complete the same `core' treatment activities as other
inmates with only substance abuse diagnoses, but also are involved in a special dual
diagnosis track. Rather than having specific programs or classes for inmates with
co-occurring disorders, all inmates in the Estelle program participate in the same
core activities to encourage a community atmosphere and to destigmatize mental
and physical disorders. All inmates in the program are involved in treatment
activities related to mental illness, co-occurring disorders, physical disabilities and
disorders, and medication management.
Relapse prevention/transition
Relapse prevention principles and strategies usually are addressed in this phase of
treatment. Activities include education regarding the relapse process; identification
of relapse cues, triggers, and warning signs; understanding the role of medication
compliance in preventing relapse; and development of a relapse prevention or
`contingency' plan. Some programs use materials and workbooks designed
specifically for criminal justice populations (Gorski, 1989), whereas others have
developed their own materials and procedures. The length of this treatment phase
and the requirements for successful completion vary across programs. Several
programs employ `transitional coordinators' or other case managers to facilitate
aftercare and linkage with other services during this phase of treatment.
Program Modifications for Inmates with Co-Occurring Disorders
Many adaptations or changes in traditional treatment approaches are necessary
when working with inmates with co-occurring disorders. These include several
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modifications to the content, format, intensity, and duration of interventions, as
described in the following section.
. Smaller caseloads: Counselors who work with inmates who have co-occurring
disorders often have smaller caseloads than other counselors in order to
provide more individualized counseling or case management services.
. Shortening and simplifying meetings: Due to the attenuated cognitive abilities of
some inmates with co-occurring disorders, programs typically shorten and
simplify psychoeducational classes. In addition, there is increased repetition of
material in order to foster better comprehension.
. Addressing `criminal thinking': Specific interventions are provided for inmates
who have developed an ingrained pattern of criminal thinking and values.
These include adapting cognitive±behavioral strategies (e.g., Rational Emotive
Therapy, Rational Behavior Therapy) for self-assessment and restructuring of
criminal thinking patterns and examination of the relationship between
irrational thoughts, criminal behavior, and drug use. For example, criminal
`thinking errors' (Yochelson & Samenow, 1976, 1986) are sometimes
conceptualized as potential relapse cues or triggers for a return to drug use
and/or a criminal lifestyle.
. Medication education: Programs attempt to educate inmates with co-occurring
disorders about the importance of medication compliance, potential side
effects, and strategies for adapting to new medications. For programs that
blend inmates with co-occurring and single disorders, it is important to
educate inmates regarding the difference between useful and harmful drugs.
Some inmates (as well as staff) who have histories of substance abuse may
believe that the use of any drug is countertherapeutic and may discourage
inmates with co-occurring disorders from complying with needed
psychotropic medications.
. Minimizing confrontation: Although confrontation by peers is a primary
method of intervention in many substance abuse treatment communities,
inmates with co-occurring disorders are often less able to tolerate the
interpersonal stress and/or emotional arousal evoked by such encounters
(McLaughlin & Pepper, 1991; Sacks & Sacks, 1995). Co-occurring disorder
programs adopt a more supportive and educational approach in encounter
groups and provide treatment staff to supervise or coordinate group sessions in
which confrontation is likely to occur.
Staffing
Staff caseloads vary across the programs surveyed. Inmate-to-staff ratios ranged
from approximately 5±1 to 30±1. Given that many of the co-occurring disorder
programs evolved from substance abuse treatment programs, it is not surprising
that many program staff are certified or licensed chemical dependency counselors
who have varying degrees of specialized training in mental health and co-occurring
disorder treatment issues. Some programs are staffed by substance abuse
treatment counselors who have received additional training in mental health
issues and co-occurring disorders, while other programs have hired new personnel
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with educational backgrounds and/or work experience in both mental health and
substance abuse treatment. Programs typically employ clinical supervisors who
have at least master's degrees in clinical or counseling psychology or social work,
as well as specialized backgrounds or certification in substance abuse treatment.
Doctoral level psychologists typically are not assigned full-time to dual diagnosis
programs, but are usually available on a part-time basis to provide supervision and/
or direct services.
Arrangements to provide psychiatric and other medical services differ widely in
correctional co-occurring disorder programs. The Estelle program contracts with a
psychiatrist for services, while the Hackberry and Lexington programs rely on
internal psychiatric or medical staff for psychiatric evaluations and medication
monitoring. Other than the Crisis Care Unit, most programs indicate that they are
not equipped to treat inmates who decompensate for an extended period, and
usually transfer such inmates to specialized psychiatric facilities for acute care and
stabilization services. Within the San Carlos and Lexington programs, this process
often involves temporary transfer to another unit or building within the institution,
whereas for other programs this may involve transporting an inmate to another
facility.
Problems related to staffing correctional co-occurring disorder programs
sometimes result from the heterogeneous backgrounds of individual staff. For
example, correctional officers who are unfamiliar with symptoms and behaviors
associated with co-occurring disorders may adopt a more punitive or hostile
approach toward inmates who engage in unusual or disruptive behavior. Staff may
also disagree regarding the need for or appropriate dosage of various psychotropic
medications, particularly anti-anxiety medications such as benzodiazepines.
Philosophical differences among staff from mental health or substance abuse
backgrounds (i.e., related to medical vs. self-help models of treatment), as well as
the increased potential of inmates with co-occurring disorders to misuse
psychotropic medication (Drake et al., 1989), may increase the likelihood of
disagreements regarding medication issues. The Ventress program, for example,
traces its separation from adjacent substance abuse treatment units to ongoing
resistance from substance abuse staff to the use of psychotropic medications.
Aftercare/Linkage
All programs reviewed have procedures for transitioning inmates from treatment
into aftercare services. The type of aftercare services available following completion
of treatment ranges from services provided in another prison facility while the
duration of sentence is served; enrollment in a transitional living center, work
release program, or halfway house; or direct release into the community. With the
exception of the Crisis Care Unit, inmates who are discharged prior to completion
of their sentence typically are not transferred directly into a general population
setting. Rather, they are often placed in therapeutic communities or in aftercare
dorms for inmates who have completed substance abuse treatment. Pre-release
programs usually include opportunities for transfer to halfway houses or
transitional centers and sometimes require placement in these transitional
settings. The Turning Point program contracts with several aftercare programs
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and provides funds for the first two months of aftercare treatment. The Estelle and
Hackberry programs also coordinate and fund placement in transitional facilities
through state agencies. Transportation to different aftercare facilities is also
coordinated by many of the programs surveyed.
As noted earlier, several programs employ `transitional coordinators' whose
primary responsibility is to identify and link inmates with other institutional or
community resources (e.g., mental health/mental retardation centers, Alcoholics
Anonymous groups) during the final weeks of the program. Other pre-release
services may include development of a service plan, coordination with case
managers from community agencies or halfway houses, and pre-release meetings
involving inmates and their newly assigned community case managers. All
programs that release inmates to community supervision programs provide
parole/supervision officers with an aftercare plan to be used during the period of
`conditional release'.
Given the difficulties in providing a comprehensive range of services for inmates
with co-occurring disorders, it is not surprising that there are often significant gaps
between specialized institutional services and those provided in the community.
Difficulties in coordinating or obtaining post-release services are often related to the
following:
. A significant lack of community resources (halfway houses, outpatient
treatment programs) for inmates returning to rural settings.
. Resistance among community agencies to providing services for persons with
criminal histories.
. The absence of mental health services or medication monitoring among many
community-based substance abuse programs.
. Lack of training and awareness of mental health issues among community
supervision officers.
. Resistance among ex-offenders to continued involvement in treatment,
following release from custody.
Due to difficulties in locating appropriate aftercare programs for program
participants, the Hackberry program is seeking funding to establish its own post-
release aftercare facilities that focus on the specific needs of individuals with co-
occurring disorders. The San Carlos program has recently obtained funds from
NIDA to develop its own community corrections treatment facility for inmates
graduating from the dual diagnosis program. The Turning Point program attempts
to involve family members in aftercare planning. Ongoing education in mental
health and co-occurring disorder issues among community supervision and
aftercare personnel is sometimes provided to enhance continuity of treatment
involvement for program graduates.
Program Evaluation
Research findings from treatment programs in community settings provide
preliminary evidence for the efficacy of integrated treatment approaches for
individuals with co-occurring disorders (Bartels et al., 1995; Jerrell & Ridgely,
1995). Common barriers to conducting comprehensive program evaluation
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research in prisons include the lack of adequate staff, resources, and appropriate
control samples. Although extensive controlled studies have not yet been
conducted in the settings described here, the programs are generally tracking
rates of program completion and recommitment to prison. Preliminary research
from the Turning Point program indicates that program completers are less likely to
be reincarcerated following release, in comparison to the general inmate population
(Field, 1995; Research Unit, Oregon Department of Corrections, 1996).
The San Carlos and Estelle programs are currently involved in CSAT or NIDA-
sponsored treatment outcome research projects. The Lexington program has
developed a collaborative arrangement with the University of Kentucky to track a
cohort of program graduates in the community and to examine factors influencing
treatment outcomes. Preliminary results from the Estelle Unit (von Sternberg,
1997) indicate high rates of treatment retention. Program graduates were also
found to have lower rates of criminal activity and drug use following treatment,
relative to a comparison group. Program participants in the Estelle program
performed as well as or better than cohorts from other therapeutic communities
across several different areas of functioning, and performed significantly better on
these measures than inmates from the general population. More comprehensive
and final results from these program evaluation projects should provide valuable
information regarding the effectiveness of several different correctional co-
occurring disorder treatment approaches, and will help guide the implementation
of new programs and services for inmates with co-occurring disorders. Other
research is needed to examine the differential effects of correctional co-occurring
disorder programs embedded within larger substance abuse or mental health units,
predictors of program retention and completion, and long-term effects of treatment
on criminal recidivism, use of health care services, and recurrence of symptoms.
DISCUSSION
A significant number of prison inmates have mental health and substance use
disorders. Although investigations of treatment approaches for individuals with co-
occurring disorders have been underway in the community for approximately a
decade, corrections-based programming for this population has begun in earnest
only in the last few years. This review describes some of these recent efforts and
illustrates the core features and common difficulties inherent in establishing and
operating prison-based dual diagnosis treatment programs. The majority of these
prison initiatives evolved from previously established substance abuse treatment
programs and as a result of increasing awareness that program participants with co-
occurring disorders did not respond favorably to traditional intervention methods.
Although many of the correctional dual diagnosis treatment programs have their
roots in substance abuse treatment, they all integrate key components of mental
health treatment (e.g., psychiatric consultation, medication education and
compliance groups, individual counseling).
Resulting program modifications in correctional settings have attempted to
match treatment interventions to the varying symptom patterns, cognitive styles,
and needs for enhanced support and monitoring that are common among
individuals with co-occurring disorders. These correctional programs offer a
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comprehensive array of services that address both the biological and psychosocial
aspects of co-occurring disorders. As in similar programs developed in the
community, prison-based interventions address the need for treatment over
relatively long periods of time; and, unlike many traditional mental health or
substance abuse programs, typically minimize the use of exclusionary program
admission criteria.
Screening and assessment strategies vary somewhat across the sites, with some
programs placing less emphasis on formal diagnostic and objective testing than is
customary in community-based programs. Correctional programs consistently
select inmates for treatment who are nearing the end of their sentence and accept
referrals from a variety of sources (e.g., reception centers, other institutions). Self-
referrals also may be accepted, sometimes in the absence of more rigorous
diagnostic criteria. All of the dual diagnosis treatment programs surveyed provide
services for inmates with major mental disorders, including the chronically mentally
ill. However, most programs are not equipped to treat individuals with florid and
disruptive psychotic symptoms until these symptoms have stabilized. Program
designs are consistent with those found in community settings for persons with dual
disorders, and are derived largely from models developed within substance abuse or
mental health treatment settings. All programs attempt to provide an integrated
treatment approach through employment of multidisciplinary staff and wide use of
external program consultants. Although community resources are often limited,
prison-based programs make determined efforts to arrange transitional treatment,
housing, and access to adjunctive services following release.
Overall, dual diagnosis treatment programs in prisons have adopted practices and
procedures that are consistent with clinical research conducted in community
settings. Given our knowledge of the course and severity of co-occurring disorders
and the extensive service needs of this population, the prison programs surveyed in
this review appear to include appropriate treatment components and intensity of
services. The common goals established by existing prison dual diagnosis programs
also appear to be consistent with those identified in the community research
literature, and include the following:
. Use of multidisciplinary staff, with a blend of mental health and substance
abuse training and experience.
. Consideration of both disorders as `primary'Ðalthough a simultaneous focus
is not necessarily provided within all interventions.
. Focus on individualized assessment of skill deficits and symptom severity.
. Utilization and integration of psychopharmacological interventions.
. Providing a long-term treatment focus, with an emphasis on phases of
intervention.
. Recognition that the need for treatment extends beyond the institution and
into the community.
. Acknowledgment of the integral role of self-help efforts.
Although preliminary reports are encouraging, an extensive research base
examining the efficacy of prison dual diagnosis treatment programs will not be
available for several years. Current research efforts should prove quite valuable in
determining the most useful types of treatment interventions for this population
and the long-term effects of prison dual diagnosis treatment.
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REFERENCES
American Bar Association (1992). Responding to the problem of drug abuse: Strategies for the criminal justice system. Washington, DC: Author.
Bartels, S. J., Drake, R.E., & Wallach, M. A. (1995). Long-term course of substance use disorders among patients with severe mental illness. Psychiatric Services, 46, 248±251.
Carpenter, M. D., Mulligan, J. C., Bader, J. A., & Meinzer, A. E. (1985). Multiple admissions to an urban psychiatric center: A comparative study. Hospital and Community Psychiatry, 36, 1305±1308.
Caton, C. (1981). The new chronic patient and the system of community care. Hospital and Community Psychiatry, 32, 475±478.
Chiles, J. A., Von Cleve, E., Jemelka, R. P., & Trupin E. W. (1990). Substance abuse and psychiatric disorders in prison inmates. Hospital and Community Psychiatry, 41, 1132±1134.
Conklin, C. (1996). Cross-system intensive outreach treatment program for the seriously mentally ill and dually diagnosed (mi/sa) offender in Wayne County, Michigan: An overview. Proceedings of the Sixth Annual National Conference on State Mental Health Agency Services Research and Program Evaluation, The Evaluation Center, Human Services Research Institute, 56±67.
Cote, G., & Hodgins, S. (1990). Co-occurring mental disorders among criminal offenders. Bulletin of the American Academy of Psychiatry and Law, 18, 271±281.
Drake, R. E., Osher, F. C., & Wallach, M.A. (1989). Alcohol use and abuse in schizophrenia: A prospective community study. Journal of Nervous and Mental Disease, 177, 408±414.
Field, G. (1995). Turning Point alcohol and drug program (women's unit) outcome study. Salem, OR: Oregon Department of Corrections.
General Accounting Office (1991). Mentally ill inmates: Better data would help determine protection and advocacy needs. Washington, DC: U.S. Government Printing Office.
Gorski, T. T. (1989). The CENAPS model of relapse prevention planning. Journal of Chemical Dependency, 2, 153±169.
Jerrell, J. M., & Ridgely, M. S. (1995). Comparative effectiveness of three approaches to serving people with severe mental illness and substance abuse disorders. The Journal of Nervous and Mental Disease, 183, 566±574.
Kay, S. R., Kalathara, M., & Meinzer, A.E. (1989). Diagnostic and behavioral characteristics of psychiatric patients who abuse substances. Hospital and Community Psychiatry, 40, 1062±1064.
Keith, S. J., Regier, D. A., & Rae, D. S. (1991). Schizophrenic disorders. In L. N. Robins & D. A. Regier (Eds.), Psychiatric disorders in America. New York: MacMillan.
Liberman, R., Massel, H., Mosk, M., & Wong, S. (1985). Social skills training for chronic mental patients. Hospital and Community Psychiatry, 36, 396±403.
McLaughlin, P., & Pepper, P. (1991). Modifying the therapeutic community for the mentally ill substance abuser. New Directions for Mental Health Services, 50, 85±93.
McLellan, A. T. (1986). `Psychiatric severity' as a predictor of outcome from substance abuse treatment. In R.E. Meyer (Ed.), Psychopathology and addictive disorders. New York: Guilford Press.
National Institute of Corrections (1991). Intervening with substance-abusing offenders: A framework for action. The report of the National Task Force on Correctional Substance Abuse Strategies. Washington, DC: U.S. Department of Justice.
Pepper, B., & Massaro, J. (1992). Trans-institutionalization: Substance abuse and mental illness in the criminal justice system. TIE Lines, 9, 1±4.
Peters, R. H., Greenbaum, P. E., Edens, J. F., Carter, C. R., & Ortiz, M. M. (1997). Prevalence of DSM±IV substance abuse and dependence disorders among prison inmates. Manuscript submitted for publication.
Peters, R. H., & Hills, H. A. (1993). Inmates with co-occurring substance abuse and mental health disorders. In H. J. Steadman & J. J. Cocozza (Eds.) Providing services for offenders with mental illness and related disorders in prisons. Washington, DC: The National Coalition for the Mentally Ill in the Criminal Justice System.
Peters, R. H., Kearns, W. D., Murrin, M. R., & Dolente, A. S. (1992). Psychopathology and mental health needs among drug-involved inmates. Journal of Prison and Jail Health, 11, 3±25.
Research Unit, Oregon Department of Corrections. (1996). Evaluation of the Powder River and Turning Point alcohol and drug treatment programs. Salem, OR: Author.
Robins, L. N., & Regier, D. A. (1991). Psychiatric disorders in America: The Epidemiologic Catchment Area study. New York: Free Press.
Sacks, S., & Sacks, J. (1995). Recent advances in theory, prevention, and research for dual disorder. Paper presented at the Middle Eastern Institute on Drug Abuse, Jerusalem, Israel.
Safer, D. (1987). Substance abuse by young adult chronic patients. Hospital and Community Psychiatry, 38, 511±514.
Siddall, J. W., & Conway, G. L. (1988). Interactional variables associated with retention and success in residential drug treatment. International Journal of the Addictions, 23, 1241±1254.
456 J. F. Edens et al.
#1997 John Wiley & Sons, Ltd. Behav. Sci. Law, Vol. 15, 439±457 (1997)
State Justice Institute (1991). National Conference on Substance Abuse and the Courts: Proceedings and manual for action. Arlington, Virginia: Author.
Steadman, H. J. (Ed.) (1991). Jail diversion for the mentally ill: Breaking through the barriers. Washington, D.C.: U.S. Department of Justice.
Steadman, H. J., McCarty, D. W., & Morrissey, J. P. (1989). The mentally ill in jail: Planning for essential services. New York: Guilford Press.
von Sternberg, K. (1997). Project check-in summary report. Houston, TX: Change Assessment Research Project, University of Houston.
Weiss, R. D. (1992). The role of psychopathology in the transition from drug use to abuse and dependence. In M. Glantz and R. Pickens (Eds.), Vulnerability to drug abuse. Washington, DC: American Psychological Association.
Weiss, R. D., Mirin, S. M., Griffin, M. L., & Michael, M. L. (1988). Psychopathology in cocaine abusers: Changing trends. Journal of Nervous and Mental Disease, 176, 719±725.
Yochelson, S., & Samenow, S. E. (1976). The criminal personality: Vol. I. A profile for change. New York: Jason Aronson.
Yochelson, S., & Samenow, S. E. (1986). The criminal personality: Vol. III. The drug user. New York: Jason Aronson.
Zuckerman, M., Sola, S., Masters, J., & Angelone, J. (1975). MMPI patterns in drug abusers before and after treatment in therapeutic communities. Journal of Consulting and Clinical Psychology, 43, 286±296.
Co-occurring disorders 457
#1997 John Wiley & Sons, Ltd. Behav. Sci. Law, Vol. 15, 439±457 (1997)