Engaging resistant adolescents in drug abuse treatment
Engaging Resistant Adolescents in Drug Abuse Treatment
Center for Family and Adolescent Research
In the first phase of a two-part treatment development study, families with a
treatment-resistant, drug-abusing adolescent (n=42) were offered 12 sessions of
Community Reinforcement and Family Training (CRAFT). This parent-focused
intervention was designed to help parents facilitate their adolescents’ entry in
treatment and support adolescents’ subsequent behavior change and to improve
parent and family functioning. In the second phase, successfully engaged
adolescents (n=30) were offered 12 sessions of a multicomponent individual
cognitive behavioral therapy (CBT) targeting substance use and related problem
behaviors. Measures were collected at pre- and post-treatment for parents and
adolescents, with an additional follow-up assessment for parents at 3-months
post-treatment. Parents in the CRAFT intervention experienced a significant
reduction in negative symptoms and 71% of parents were successful in engaging
their resistant youth in treatment. The CBT intervention for the engaged youth
was associated with a statistically significant, but not clinically significant,
Adolescents, substance abuse, treatment engagement, CRAFT, treatment
According to a recent estimate by the Department of Health and Human
Services (2002), 93.6% of the 2.6 million adolescents exhibiting severe drug or
alcohol problems receive no treatment. The discrepancy between adolescents
with problem substance use who enter counseling and those who do not
represents a profound gap in treatment services, leaving significant numbers of
youth vulnerable to ongoing problems into young adulthood (Duncan, Duncan,
Alpert, & Hops, 1997; Zucker, Chermack, & Curran, 2000). Moreover, the
potential impact of empirically supported treatments to mitigate the problem
(Dennis et al., 2004b; Kaminer & Burleson, 1999; Liddle et al., 2001; Waldron,
Slesnick, Brody, Turner, & Peterson, 2001) is severely diminished.
A variety of underlying factors likely contribute to the magnitude of the drug
abuse treatment gap for adolescents. When drug-abusing youth enter treatment,
they generally do so in response to external pressures from families, schools or
employers, or the legal system (Battjes, Onken, & Delany, 1999) and without
external pressure, treatment entry is unlikely. Although the juvenile justice system
is a primary source of entry into treatment, as few as 20% of adolescents in need
of treatment in the past year had an arrest (DHHS, 2002). Thus, engagement in
treatment through the legal system has a relatively low impact on the treatment
gap. Most traditional intervention programs, including those that are ecologically
based, typically depend on social systems to identify youth in need of treatment
services (Henggeler & Borduin, 1990; Sexton & Alexander, 2002). Although youth
who are remanded to treatment (e.g., court order, in lieu of school suspension)
likely still have limited commitment to change and readiness for treatment
(Cunningham & Henggeler, 1999; Diamond, Liddle, Hogue, & Dakof, 1999;
Melnick, DeLeon, Hawke, Jainchill, & Kressel, 1997; Prochaska, DiClemente, &
Norcross, 1992) most interventions incorporate procedures to enhance
adolescents’ readiness for change (Dennis et al., 2004b; Waldron et al., 2001)
once they begin to meet with a therapist. When youth elude treatment or maintain
active refusal to participate in therapy, however, linking them with available
services requires the development of qualitatively different and more effective
engagement interventions than are currently available in the field.
One could argue that the power differential between adolescents and parents
would ensure parents’ ability to influence their adolescents to enter treatment. In
cases where behavioral problems such as substance abuse have developed, the
pattern of adolescents rebelling against or refusing parental demands is often
firmly established. Szapocznik et al. (1988) have noted that, in the face of a
powerful adolescent, parents may encounter significant challenges in getting their
adolescent to enter drug abuse treatment. The adolescents’ resistance, coupled
with an abdication of authority by the parents, may reflect a more general
condition of a disrupted family hierarchy and/or an enmeshed boundary between
the parent and adolescent subsystem. Such resistant youth are unlikely to enter
or engage in treatment without the implementation of specialized engagement
interventions, including specific strategies implemented with resistant adolescents
outside the clinic setting (Santisteban et al., 1996; Stanton & Heath, 2004).
A number of adult studies have demonstrated the potential of the family as a
route for engaging treatment-resistant individuals with substance abuse or
dependence (Garrett et al., 1997; Kirby, Marlowe, Festinger, Garvey, &
LaMonaca, 1999; Marlowe, Merikle, Kirby, Festinger, & McLellan, 2001; Meyers,
Miller, Hill, & Tonigan, 1999; Miller, Meyers, & Tonigan, 1999). According to
Marlowe et al. (1996), substance abusers reported that family members exerted
substantially more influence over their decision to enter treatment than other
sources of influence, including legal pressures exerted by court-mandated
treatment. Research has also shown that family members and significant others
can be important resources in treating drug abuse (Azrin, 1976; Garrett et al.,
1997; McGillicuddy, Rychtarik, Duquette, & Morsheimer, 2001; O’Farrell & Fals-
Stewart, 2003; Sisson & Azrin, 1986; Szapocznik, Kurtines, Foote, Perez-Vidal, &
Hervis, 1983; Thomas & Santa, 1982). Yet, little research has systematically
examined interventions for family members who could facilitate the entry of drug-
abusing youth in treatment. The development of a theoretically and empirically
derived treatment, which is sensitive to the needs of adolescents and involves the
family in the process of treatment engagement has potential merit for addressing
the treatment gap for treatment-elusive youth. Once youth take the initial step of
meeting with a therapist, then techniques within therapy could be implemented to
increase adolescents’ motivation and investment in therapy process and enhance
their retention in treatment, with the aim of ensuring an adequate treatment dose.
Community Reinforcement and Family Training (CRAFT)
One promising approach for engaging treatment-elusive youth is the CRAFT
intervention, a unilateral family treatment approach specifically designed to aid
family members or concerned significant others (CSOs) in modifying the behavior
of initially unmotivated adult drug and alcohol abusers and engaging them in
treatment (Kirby et al., 1999; Meyers et al., 1999; Miller et al., 1999). CRAFT,
recommended in recent reviews of the engagement literature (Stanton, 2004;
Stanton & Heath, 2004), is an outgrowth of work by Azrin and his colleagues
(Azrin, Sisson, Meyers, & Godley, 1982; Sisson & Azrin, 1986) and later adapted
by Meyers and Miller and their colleagues (Meyers et al., 1999; Miller et al., 1999)
for use with adult substance users refusing treatment. The theoretical foundation
of the model derives from the operant learning perspective, in which substance
abuse is viewed as occurring within the context of a network of operant social
contingencies (Sisson & Azrin, 1989, Meyers et al., 1999). Studies evaluating the
efficacy of the CRAFT approach with adult substance abusers have demonstrated
the marked success of training CSOs in CRAFT procedures to influence treatment
entry (Kirby et al., 1999; Miller et al., 1999; Meyers et al., 1999). Engagement
rates for CRAFT have ranged from 59% to 74% for CRAFT intervention,
compared to a range of 13% to 30% for Al Anon and other family-based
engagement comparison conditions. Based on these findings, CRAFT may also
offer a viable approach for initiating treatment with resistant or elusive drug-
Cognitive Behavioral Therapy for Engaged Adolescents
For adolescents who engaged in treatment as a result of the CRAFT
intervention with their parents, cognitive behavioral therapy (CBT) was offered.
CBT is an empirically supported intervention for adolescent substance abuse and
dependence (Waldron & Kaminer, 2004), with studies demonstrating significant
reductions in substance use (Dennis et al., 2004b; Kaminer & Burleson, 1999;
Liddle et al., 2001) and increased abstinence rates and increases abstinence
rates (Waldron et al., 2001). Given the empirical support for CBT in traditional
outpatient adolescent substance abuse treatment, CBT was expected to be
efficacious for treatment-resistant youth who were successfully engaged in
treatment through the CRAFT intervention.
The current study was conducted in two phases and was designed to: (1)
evaluate a systematic, theory-based and manually guided CRAFT parent training
approach designed to engage unmotivated substance-abusing adolescents into
treatment through their parents (Phase I), and (2) implement and evaluate CBT
(Phase II) with the adolescents who are successfully engaged in treatment during
Phase I. In this treatment development study, the emphasis was on adapting
CRAFT to be a developmentally appropriate intervention for parents of treatment
resistant adolescents and on demonstrating the potential of CRAFT for
engagement youth in treatment, rather than formally evaluating CRAFT for
parents of substance-abusing adolescents through a randomized clinical trial.
Participants in Phase I of the study were 42 parents or parent surrogates,
including 35 mothers, 7 fathers, 2 other family members. The majority were
recruited through newspaper advertising, although a few participants were
recruited through public schools and other community agencies. Parents’ average
age was 46 years (SD = 7.9). The sample included 48% Hispanic-, 48% Anglo-,
and 4% Native American. Two-parent households represented 49%, with 39%
single-parent households and 12% living with other relatives. Average education
level of parents was 14.5 years (SD = 2.6) and ranged from 6th grade to post-
graduate education. Adolescent mean age was 16.6 years (SD = 1.3), ranging
from 14 to 20 years; 79% were male. Adolescents averaged 10.2 years of
education (SD = 1.4), ranging from 7th grade to some college.
Participants in Phase II were 30 adolescents who were successfully engaged
into treatment following their parents’ participation in Phase I of the study.
Participating adolescents included 23 males and 7 females between 14 and 20
years of age (M = 16.6 years; SD = 1.3). Youth ethnicity was 40% Anglo, 47%
Hispanic, and 14% of other ethnic origin. The majority of youths lived with their
parent(s) (83%). Most of the participants were enrolled in school (83%) and were
employed (60%). Adolescents reported a mean age of initiation of marijuana use
at 12 years (M = 12.33, SD = 2.07).
Initial telephone eligibility screening occurred when parents called with a
concern about their son/daughter’s substance use. The screening was designed
to differentiate between parents who, with some guidance and support, could be
assisted in bringing their adolescent to treatment and parents who had exhausted
their resources and were unable to do so. If parents had not yet discussed
treatment with the adolescent, the therapists discussed how to initiate those steps
(e.g., choose a good time, describe treatment positively) with them. Adolescent
refusal, despite genuine parental efforts to engage youth, was a key inclusion
criterion for the study. Other inclusion criteria were: adolescents were aged 14 to
20 years, had a suspected substance use disorder, lived in the area, had
sufficient contact with parents to allow parents to implement newly acquired skills
with the youth (i.e., direct contact on 40% of the days during the past 3 months).
Youth were excluded if there was evidence of psychotic or organic state in
parents or adolescents of sufficient severity to interfere with understanding of
procedures or if they had participated in drug treatment in the past 90 days.
After consenting to participate in the study, in accord with human subject
research standards, parents enrolled in Phase I received the CRAFT intervention
and were assessed on measures of parent, adolescent, and relationship
functioning at pre- and post-treatment, and at 6 months after the pre-treatment
assessment. Parents were compensated $75 each for completing the post-
Adolescents’ entry into Phase II of the study was coordinated by the parents’
and adolescents’ therapist and assessment staff in order to facilitate engagement.
After providing informed consent with respect to participating in the study, youth
completed a pre-treatment assessment and received individual CBT. They were
assessed again at post-treatment and provided $75 compensation. The timing of
data collection for adolescents was based on their entry into treatment, and thus
was not synchronized with the timing of the parents’ data collection. The
adolescent pre-treatment assessment generally occurred between the parent’s
pre- and post-intervention assessments, while the adolescent post-treatment
assessment corresponded most closely with parent’s follow-up assessment.
The CRAFT intervention for parents or parent surrogates of substance-
abusing adolescents was patterned after the adult-focused CRAFT intervention
developed by Meyers and Miller and their colleagues (Meyers et al., 1999; Miller
et al., 1999). The intervention involved enhancing the psychosocial functioning of
the parent, assisting the parent in building skills necessary to help engage their
resistant adolescent into treatment, and improving family relationships by teaching
the parent adaptive social skills. Specific components of CRAFT included: (1)
raising awareness of negative drug use consequences and of potential benefits of
treatment; (2) contingency management training to reinforce abstinence/reduced
substance use and avoid interfering with natural consequences; (3)
communication training; (4) planning and practicing activities to interfere and
compete with drug use; (5) increasing the parent's own reinforcing activities; (6)
specific strategies for preventing dangerous situations; and (7) preparing to initiate
treatment when the parent is successful in engaging the adolescent. Unique
elements of the model included a reliance on functional analyses of behavior, a
focus on identifying and utilizing positive reinforcers for both adolescents and
parents, and an emphasis on personal lifestyle changes for the parent.
Parents were offered 12 CRAFT sessions to develop skills needed to engage
their resistant adolescent into treatment, with additional crisis sessions available.
Parents continued to receive the CRAFT intervention even after their adolescents
were engaged into treatment in order to continue their own skill building. A 6-
month window of opportunity after parents initiated CRAFT was permitted for the
CBT for adolescents involved a multicomponent individual treatment modeled
upon various programs described in the literature (Kadden et al., 1992; Monti,
Abrams, Kadden, & Cooney, 1989; Waldron & Kaminer, 2004). The CBT manual
developed for an earlier study (Waldron et al., 2001) included a functional analysis
of substance use behavior to enhance motivation for change, specific skill training
modules, and relapse prevention. A functional analysis is a structured interview
that examines the antecedents and consequences of specific behaviors, such as
drinking or using drugs (Meyers & Smith, 1995). This information is integral for
identifying stimulus cues associated with higher risk for substance use and
identifying the positive and negative consequences the adolescent experiences
with respect to substance use and restraint from use. Positive or pro-social
reinforcing behaviors that may compete with problem behaviors, or provide
pleasant activities for the youth are also identified. The skill training phase
consisted of 8-10 sessions during which specific skills were taught, monitored,
and practiced, including: coping with cravings, communication and problem-
solving skills, management of anger and depression, refusal skills, social support,
school attendance and vocational goals, and relapse prevention (Marlatt &
Adolescent were assigned to a different therapist for CBT than the one
meeting with their parents for the CRAFT intervention. Youths were offered 12
weekly CBT sessions, with additional crisis sessions available. All therapy
sessions were videotaped for purposes of clinical supervision and therapist
Parent functioning. In Phase I, parents provided self-report information on their
emotional status, physical health, and psychosocial adjustment. Standard
instruments included to assess depressive symptoms, state anger, and anxiety,
respectively, were: the Beck Depression Inventory (BDI; Beck, Steer, & Garbin,
1988), the State-Anger subscale of the State-Trait Anger Expression Inventory
(STAXI; Spielberger, 1988) and theState-Trait Anxiety Inventory (STAI;
Adolescent functioning. During Phases I and II, parents provided collateral
reports on adolescent functioning in several areas. In Phase II, adolescents were
assessed directly. Adolescent substance use was measured using a Timeline
Followback (TLFB) interview (Dennis, Funk, Godley, Godley, & Waldron, 2004a;
Miller & Delboca, 1994; Sobell & Sobell, 1992; Waldron et al., 2001). The primary
measure was the percent days of marijuana use. Urine drug screens were also
used as a biological indicant of adolescent substance use. Parents provided
information on adolescent substance use using the TLFB collateral form. The use
of timeline interviewing to collect collateral data about substance use through
significant others, including parents of substance-abusing youth, is well
established (Ciesla, Spear & Skala, 1999; Sobell & Sobell, 1992).
Parents and adolescents also reported on other problem behaviors, with
parents completing the Child Behavior Checklist (CBCL) and adolescents
completing the Youth Self Report (YSR) in Phase II (Achenbach & Edelbrock,
1982). The BDI (Beck et al., 1988) was used for clinical screening of depression,
a problem commonly associated with substance use.
The Conflict and Cohesion subscales of the Family Environment Scale (FES;
Moos & Moos, 1986) were used to measure parents' and adolescent's
perceptions of family relationship functioning. The FES, a widely used,
standardized family assessment instrument, has been used to assess the severity
of family dysfunction and to discriminate between normal from disturbed families,
including alcohol-abusing families (Moos, Finney, & Chan, 1981).
Treatment in Phases I and II of the study was provided by 9 therapists. All 9
therapists provided CRAFT to parents and 8 of the 9 provided CBT to
adolescents, although none of the therapists provided treatment for a parent and
adolescent within the same family. Therapists had from 1 to 15 years of
experience; all therapists were Master’s level substance abuse counselors or
doctoral students in clinical or counseling psychology. All therapists were fully
trained in the CRAFT and CBT interventions and participated in weekly group
supervision with a licensed Master’s level clinical supervisor with more than 15
years of experience with CRAFT and CBT interventions throughout the duration of
the treatment phases of the project. Treatment adherence was monitored by the
supervisor, who reviewed adherence checklists with each therapist during weekly
group supervision. Therapists were given corrective feedback by the supervisor
on the basis of videotape review, discussions, and reviews of adherence
The results section summarizes Phase I and Phase II findings in six sections:
1) engagement rates for parents and youths, 2) Phase I pre- to post-intervention
results of changes in parent functioning, 3) a comparison of parents’ perceptions
of engaged and non engaged youths, 4) parent and adolescent relationship
functioning, 5) Phase II pre- to post-intervention changes for the youths’
substance use, and 6) changes in other areas of the youths’ functioning.
Phase I and II Treatment Engagement and Attendance
The first important research question was whether parents and youths could
be successfully engaged in therapy with the CRAFT procedures. The results for
the 42 parents participating in the study indicated that they attended an average
of 9.9 sessions of CRAFT (SD = 3.7), with attendance ranging from 1 to 18
sessions. During or immediately following the parent’s treatment, parents
successfully engaged 71% of the adolescents into treatment (n = 30) while 29%
of the adolescents were not engaged (n = 12). The engagement rate was 66%
for one-parent families and 72% for two-parent families.
Engaged adolescents were offered 12 sessions of CBT, with the option of 1-2
additional crisis sessions if clinically indicated. The average time between
parents’ completion of CRAFT and adolescents’ initiation of CBT was 6.3 weeks
(SD = 4.9). Engaged youth attended a mean of 8.1 sessions of CBT (SD = 4.34),
and a median of 9.5 sessions (range:1-13 sessions). Forty-three percent of the
adolescents completed all 12 CBT sessions. Two adolescents attended only one
session, while four completed one additional emergency session (13 sessions
Parents (n =42) and 30 adolescents (n =30) completed intake assessments.
Thirty-eight parents (90%) completed follow-up assessments; 28 adolescents
(93% of engaged adolescents) completed follow-up assessments. The
engagement and retention rates for both parents and adolescents in the present
study are consistent with previous studies using CRAFT with adult substance
abusers (Meyers et al., 1999). The present findings are presented in a manner to
facilitate comparisons with the Meyers et al. (1999) findings.
Phase I: Community Reinforcement Training Outcomes for Parents
An important objective of CRAFT procedures is to improve the functioning of
parents, thereby enhancing their ability to engage their adolescent in treatment.
Therefore, we evaluated such improvements before and after CRAFT. Measures
comparing parent emotional functioning before and after treatment indicated that
parents derived some benefit from the CRAFT intervention. Table 1 summarizes
data for 4 parent functioning measures at intake, post-treatment, and 6-month
A 2 (Engagement Status) x 3 (Time) repeated measures multivariate analysis
of variance (MANOVA) examined parent outcomes. Engagement Status served
as a between subjects factor and Time as a within subjects factor while five
parent emotional functioning variables served as dependent variables. These
measures included the Beck Depression Inventory (BDI) total score, the State-
Trait Anxiety Inventory (STAI) subscales, and the State-Trait Anger Inventory
(STAXI) subscales. These means and standard deviations for these measures
The results of these analyses indicated that parents experienced improved
emotional functioning across assessment points, and these improvements did
not depend upon the adolescent’s engagement in treatment. The multivariate
analyses indicated a significant within-subjects main effect for Time across all
dependent variables [MVF(10,128) = 2.59, p < .007, eta 2 = 0.168]. These
analyses revealed that the Engagement Status main effect and the Engagement
Status x Time interaction were not statistically significant (see Table 1). Thus, it
does not appear that parent improvement on emotional functioning constructs
following treatment was contingent upon whether their adolescent was engaged
To further examine the effects of the CRAFT intervention on each dependent
variable, repeated measures univariate analysis of variance (ANOVA) tests were
performed for each parent emotional functioning variable. The results of the
ANOVA tests and pairwise comparisons are presented in Table 1. Pairwise
comparisons of means for significant main effects reported below included a
Bonferroni adjustment for multiple comparisons. Results indicated a significant
main effect for time on BDI total score [F(1.66,56.56) = 6.69, p < .004, eta 2
Pairwise comparisons revealed a marginally significant reduction (p<.06) in
parent depression (BDI total score) from intake (M = 9.75, SD = 8.32) to post-
treatment (M = 6.19, SD = 6.20) and a significant reduction (p<.01) from intake to
6-month follow-up (M = 5.31, SD = 6.20). The Time main effect was also
statistically significant for State Anxiety [F(2,68) = 10.79, p < .001, eta 2 = 0.241]
and Trait Anxiety [F(1.78,60.34) = 5.86, p < .006, eta 2 = 0.147 with Huynh-Feldt
adjustments. Pairwise comparisons on State Anxiety revealed a significant
reduction (p < .001) in anxiety from intake (M=42.94, SD=12.93) to post-
treatment (M = 32.56, SD = 11.49), and the difference from baseline was
maintained at 6-month follow-up (M = 33.44, SD = 10.73; p < .01). Pairwise
comparisons indicated that the difference between intake (M = 40.00, SD = 9.99)
and post-treatment (M = 36.58, SD = 11.17) was not significant; however, the
results revealed a significant reduction (p < .01) in Trait Anxiety between intake
and 6-month follow-up (M=34.28, SD=10.12). Univariate ANOVAs for the Time
main effect revealed no significant changes on the State or Trait Anger
Comparison of Parents of Engaged versus Unengaged Youth
We examined a number of variables to assess whether pre-intervention parent
characteristicsdifferentiated those who successfully engaged their adolescent in
treatment. None of the parent variables examined differentiated the two groups.
Moreover, parent reports of substance use and other areas of functioning did not
differ for adolescents engaged versus those who were not engaged in treatment.
Parent and Adolescent Relationship Functioning Outcome
In addition to the parent’s own functioning, the CRAFT interventions are also
designed to improve the relationship functioning of parents and youths. We
created a composite of the FES Cohesion and Conflict scales (reverse scored) at
each observation point to measure the perception of family functioning. Higher
scores reflect more cohesion and lesss conflict. First, we conducted a 2
(Engagement Status) x 3 (Time) repeated measures ANOVA with the parent FES
family functioning as the dependent variable. The results revealed a significant
Time effect [F(2,70) = 5.67, p < .01, eta 2 = 0.14] but the Engagement Status [F<
10] and the interaction [F< 10] were not significant. Bonferroni adjusted pairwise
comparisons indicated that the Intake (M = 2.11, SD = 3.98) and post-treatment
(M = 3.13, SD = 4.33) levels of family functioning were significantly poorer than
the 6-month followup (M = 3.86, SD = 3.68). Second, we examined the
adolescent’s perception of family functioning. Since all youths were engaged, we
could not examine this independent and the dependent variable was collected
only at the adolescent’s intake and post-treatment. We conducted a one-factor,
two-level repeated measures ANOVA for the Time factor, and the results showed
that the Intake (M = 2.04, SD = 4.55) and the post-treatment means (M = 2.46,
SD = 3.82) were not significantly different [F(1,27) = .57, p < .45, eta 2 = 0.02].
In summary, parents reported significant improvements in their family
environment and in their satisfaction with adolescents following treatment. They
reported such improvements regardless of whether adolescents become
engaged in treatment. Adolescents, however, did not report significant changes
in the family environment following treatment.
Adolescent Substance Abuse Treatment Outcome
Both the parent and the youth provided measures of adolescent substance
use. Adolescent data was available only for the 71% of adolescents who were
successfully engaged into treatment. The parent report includes information on
adolescents who were not engaged into treatment. For engaged adolescents,
outcome could have been influenced by both the CRAFT and the CBT
interventions, whereas outcome for unengaged adolescents would only be
impacted by the CRAFT intervention. In addition, adolescent outcome data is
available for two points in time, pre- and post-treatment, while for parents
outcome data is also available at a third point in time, 6-month follow-up.
The youth’s substance use was obtained from the Timeline Followback
measure which creates an index of the percent days use in the past 90 days. The
Phase II CBT intervention does focus on marijuana use but does not specifically
target alcohol or tobacco use. We first examined the changes in the marijuana
use measure over time (see Table 2). An analysis revealed that adolescents
significantly [F(1,27)=5.95, p<.02, eta 2 = 0.180] reduced their marijuana use from
intake (M = 74.22, SD = 34.33) to post-treatment assessment (M = 62.03, SD =
38.12). We also examined changes in alcohol use and tobacco use. In contrast
to findings for the marijuana index, the results for alcohol and tobacco use
revealed no significant changes in either substance [F’s < 1.0]. Thus, the findings
indicated that changes occurred only for the substance which was the particular
focus of the CBT intervention and did not extend to alcohol or tobacco use.
Parent Report of Adolescent Substance Use
Parent report of adolescent outcome for substance use was measured by the
percent days use of each marijuana, alcohol, and tobacco during the past three
months (Table 2). Since the engaged youths reported changes on marijuana use
but not alcohol or tobacco use, we examined the marijuana dependent variable.
A 2 (Engagement Status) x 3 (Time) repeated measures ANOVAS revealed a
significant Time main effect [F(1.76, 65.26) = 3.87, p<.03, eta 2 = 0.095]; with
Huynh-Feldt adjustments due to a significant finding for Mauchly’s sphericity test.
Neither main effects nor interactions of the Engagement Status independent
variable was statistically significant [F’s <1.1]. Bonferroni-adjusted pairwise
comparisons revealed no significant difference between intake (M = 54.95, SD =
34.85) and post-treatment (M = 44.86, SD = 33.13) on marijuana use, but a
marginally significant reduction (p <.076) occurred from intake to 6-month follow-
up (M = 38.98, SD = 36.45). Univariate 2 (Engagement Status) x 3 (Time)
repeated measures ANOVAs for the tobacco and alcohol percent days use
measures revealed no significant main effects and no interaction effects.
In summary, parents reported high levels of adolescent marijuana use at
baseline and they reported reductions in marijuana following treatment. While
tobacco and alcohol use were not targeted in the intervention, parents reported
high levels of adolescent tobacco use and very low levels of alcohol use at
baseline. These remain unchanged following treatment. The findings suggest
that parent reports of adolescent substance use outcomes are consistent with,
but not as robust as, adolescent self-reports.
Adolescent Outcomes in Other Areas of Functioning
Adolescents provided self-report in several areas of functioning including
depression (BDI total score) and the YSR internalizing and externalizing
dimensions (see Table 3). A MANOVA [MVF (3,24) = 0.98, p < .42, eta 2 = 0.11]
and separate univariate ANOVAs for all 3 dependent measures revealed no
significant change over time. In contrast to the adolescent data, parents report
numerous improvements in adolescent functioning following treatment. Parents
CBCL ratings revealed a significant main effect for time on the internalizing
[F(1,37) =10.91, p < .001], externalizing [F(1,37) = 18.59, p < .001] dimensions.,
Neither the Engagement Status main effect nor interaction was statistically
Pairwise comparison of means from intake to post-treatment and from intake
to 6-month follow-up assessments indicated significant improvements over time
in adolescent functioning (see Table 3). The comparisons showed that
improvements were maintained at 6-month follow-up. Specifically, parents
reported a significant reduction (p < .004) in adolescents’ internalizing symptoms
from intake (M = 15.24, SD=9.65) to post-treatment (M = 10.32, SD = 9.09) which
was maintained at 6-month follow-up (M = 9.41, SD = 7.08; p < .001). Parents
also reported significant reduction (p < .001) in externalizing symptoms from
intake (M = 22.43, SD = 10.53) to post-treatment (M = 15.92, SD = 10.28) which
was maintained at 6-months follow-up (M = 13.84, SD = 8.50).
The CRAFT intervention was associated with a success rate for engaging
resistant adolescents into treatment (i.e., 71%) that was similar to rates for
CRAFT implemented with adult CSOs (Kirby et al., 1999; Meyers et al., 1999) and
to rates for other adolescent engagement programs (Donohue et al., 1998). Once
engaged, youth were retained in individual CBT, attending an average of two-
thirds of the treatment sessions offered. In addition, parent report on numerous
outcome variables demonstrated that the parents, adolescents, and the family
environment all showed substantial improvements following the CRAFT
intervention regardless of whether adolescents were successfully engaged in
treatment. These findings are suggestive that parental involvement plays an
influential role in adolescent treatment engagement and in effecting change in
individual and family functioning, even when all family members are not present in
therapy sessions. The CRAFT intervention with parents also appears to be
relatively cost-effective (i.e., weekly one-hour sessions) compared to other
methods of engaging resistant adolescents in treatment (i.e., home visits, juvenile
justice intervention). While these conclusions are tentative and based solely on
parent report, our study lays a foundation for more systematic evaluation of
CRAFT with adolescents and may provide a unique avenue for treatment
providers to address the gap in services for adolescent substance use disorders.
Because we were not able to identify predictors of engagement or
differentiate engaged vs. non engaged youth using parent or adolescent intake
characteristics, the study provides little information about potential mechanisms
of engagement associated with the CRAFT intervention. One possible reason for
the failure to detect a difference between engaged and non engaged samples
was the low statistical power that exists due to the relatively small sample size,
especially for the non engaged participants (n =12) in the study. However, we
determined that nearly 4 times as many participants would be required to detect
the differences actually observed in the present study with power greater than
0.80. These results suggest that the failure to detect differences between
engaged and non engaged families was not due solely to the modest sample
sizes of the study, lending indirect support for the notion that the variables we
examined are unrelated to the engagement process. Additional research will be
required to link hypothesized mechanisms with the engagement process.
For adolescents who engaged in treatment, statistically significant reductions
in substance use, generally, and on marijuana use in particular were found from
pre- to post-treatment. These reductions, however, were not substantial enough to
be clinically meaningful. At follow-up, adolescents had only reduced their
marijuana use from 74% to 62% of the previous 90 days. Thus, while CBT
appears to be a promising intervention, much improvement is needed if complete
abstinence or meaningful harm reduction is to be achieved. One implication of this
research is that adolescents who initially refused to enter treatment are more
difficult to treat once engaged. Thus, stronger and/or different interventions may
be needed for this unique subgroup of drug-abusing adolescents.
The specificity of impact on marijuana, the focus of the intervention, also
suggests a lack of generalization of benefit across drugs or drug use behaviors.
No significant changes were found for tobacco use, for which adolescents showed
a high level of baseline use, or alcohol use, for which they showed a low level of
use at baseline. These findings are inconsistent with a drug substitution
hypothesis whereby, for example, adolescents may have reduced marijuana use
but concurrently increased alcohol or other drug use. The data also provide
evidence ruling out the possibility that outcomes are a result of regression to the
mean, in that uniform reductions were not found for all drug classes. However, the
pattern of results suggests that interventions may need to include a broader focus
on the types of drugs adolescents are currently using.
The findings also indicated that parents and adolescents differ in their views of
each other, the family, and their relationship. Thus, the extent to which the CRAFT
intervention is successful in changing adolescent behaviors and the extent to
which it influences parental perceptions of adolescent behaviors remains unclear.
These results emphasize the importance of gathering data from multiple sources
in order to gain a more complete picture of the family and of individual functioning.
However, the CRAFT intervention is designed to teach parents new ways of
interacting with their adolescents and to indirectly influence adolescent behavior.
Moreover, in adapting the standard adult CRAFT intervention for working with
parents of adolescents, CRAFT therapists focused on helping parents view their
adolescents in more positive ways. This emphasis, along with parents’ reductions
in their own depression, anxiety, and physical symptoms, may have been
associated with more positive parent perceptions of their adolescents in the
absence of actual behavior change in their adolescents. However, changes in
parental perceptions are likely to lead to changes in the way parents interact with
their children and, thus, may result in changes in the youths’ behavior over time.
Research Limitations and Future Directions
The research has several limitations that temper the conclusions that can be
drawn about CRAFT as a treatment engagement strategy for adolescents. First
and foremost, the study focused on treatment development and, hence, employed
a one-group pre-post design. Parents were not randomly assigned to CRAFT or a
comparison condition; rather, all parents received CRAFT. We cannot rule out that
parents may, ultimately, have succeeded in getting their adolescents to enter
treatment without CRAFT. A formal controlled trial is needed to evaluate efficacy
of both CRAFT and CBT with families of treatment-resistant adolescents.
However, the current findings are consistent with outcomes in adult CRAFT
studies employing randomized designs and with other adolescent engagement
studies, lending some confidence to the engagement outcome.
Second, the sample was relatively small and families were comprised mostly of
mothers concerned about their sons’ drug abuse. There was not a sufficient
sample to evaluate whether the intervention is equally successful with fathers
and/or with daughters. According to Stanton (2004) in his review of engagement
studies involving both parents may also further enhance engagement results.
Future research on CRAFT for adolescents should include number of family
members participating as a variable of interest.
Given our assertion that treatment-elusive youth represent a distinct and
important segment of the treatment gap found within mental health services for
adolescents, it is important to identify the distinguishing characteristics of this
population. One avenue for future research is to compare treatment-elusive youth
with traditional outpatient adolescent treatment samples and with other adolescent
engagement intervention samples. Clearer specification of adolescent samples is
a critical element in evaluating the efficacy of engagement programs, as other
engagement studies have been implemented with parents of adolescents who
had not “refused” treatment (Donahue et al., 1998; Santisteban et al., 1996). A
greater understanding of the “treatment refusing” population” could be key in
guiding treatment development research for engaging and effecting change with
these challenging adolescents. Better strategies are clearly needed to reach this
segment of the population and link substance-abusing youth with treatment
services. In addition to engagement strategies such as CRAFT, outreach
programs and other interventions that mobilize resources for youth within their
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