Can Cognitive‐Behavioral Therapy Be Optimized With Parent Psychoeducation? A Randomized Effectiveness Trial of Adolescents With Major Depression in Puerto Rico

This is a longitudinal randomized control trial on the impact of adding a parent psychoeducation intervention (TEPSI) as part of cognitive‐behavioral therapy (CBT) for adolescents with Major Depressive Disorder (MDD) in a Puerto Rican sample. We tested the efficacy of adding 8 group sessions of TEPSI to 12 sessions of individual CBT on reducing depressive symptoms, MDD diagnosis, and improving family functioning. Participants (n = 121) were randomized to individual CBT with or without TEPSI. No main group effects were found for most patient domains including depression symptoms, as well as presence of adolescent's MDD diagnosis at posttreatment. Results did show a main effect of CBT over time for depression symptoms, suicide ideation, family criticism, and the presence of MDD diagnosis decreasing from pre‐ to postintervention. A year post treatment, almost 70% of adolescents in both conditions (CBT and CBT + TEPSI) remained in remission. A main effect was obtained for treatment in the adolescent's perception of familism and family emotional involvement. The primary hypothesis that family psychoeducation would optimize CBT for depression in adolescents was not supported. Both conditions yielded similar clinical end points. The culturally adapted CBT was found effective with Latino/a adolescents showing clinically significant improvements from pretreatment to posttreatment and remained stable at a 1‐year follow‐up. Regarding family outcomes, adolescents in CBT + TEPSI remained stable from pretreatment to posttreatment on family emotional involvement, while adolescents in CBT‐alone showed an increase. The implication of these findings is discussed.     

Processes in Group Cognitive and Behavioral Treatment for Hoarding

Processes that emerge in the course of group treatment, such as universality and mutual aid, have been posited to promote therapeutic change (e.g., Yalom, 1995); however, they have received relatively little attention in the group cognitive behavioral treatment (CBT) literature (Rose, 2004). Group CBT interventions have been successful in alleviating symptoms of mood and anxiety disorders, such as major depression and obsessive-compulsive spectrum disorder (e.g., Anderson & Rees, 2007; Himle et al., 2001). A specialized group CBT protocol has been developed to treat hoarding (Muroff et al., 2009; Steketee & Frost, 2007), characterized by excessive clutter in the home, difficulty discarding objects that appear of little value, and often excessive acquisition, resulting in significant distress and/or impairment (Frost & Hartl, 1996). Individual (Tolin, Frost, & Steketee, 2007) and group (Muroff et al.) CBT for hoarding have shown promising effects. An examination of group process factors relevant to hoarding, however, is critical in order to further understand and tailor group interventions for this complex problem. The current paper characterizes four group processes specific to group CBT for hoarding: (a) universality or inclusion may reduce stigma and shame about having hoarding; (b) cohesion seems to support attendance and to provide positive peer pressure to motivate change; (c) the opportunity to give mutual aid seems to instill hope and motivate change; (d) social contact and socializing may reduce social isolation, a characteristic of this population. Discussion includes specific case examples illustrating these group processes and their potential complexity, within the context of group CBT for hoarding. Recommendations are advanced for future directions in evaluating group CBT for hoarding, particularly the formal study of group process variables with this population.     

Durability of Cognitive Behavioral Therapy Effects for Youth and Adolescents With Anxiety,Depression, or Traumatic Stress:A Meta-Analysis on Long-Term Follow-Ups

Cognitive behavioral therapies (CBT) for youth with anxiety, traumatic stress, and depression have demonstrated strong effects in individual studies and meta-analyses. Relatively more attention has been given to posttreatment effects, though, and assessment of follow-up effects has been limited at the meta-analytic level. The current meta-analysis aimed to (a) examine the effects of youth CBT at posttreatment, 1-month, 3-month, 6-month, 1-year, and long-term (2 + years) follow-up as well as (b) identify research-related variables (e.g., measure respondent type) that relate to effects. Using a random effects model across 110 child and adolescent CBT groups, within-group effect sizes were large at posttreatment (g = 1.24) and from 1-month through long-term follow-up (g = 1.23–1.82), and effect sizes did not significantly differ by treatment target (i.e., anxiety, traumatic stress, depression). However, availability of outcome data for effect sizes diminished across later follow-up assessments. Moreover, effect sizes were significantly associated with outcome respondent type across assessment timing, with outcome measures from caregiver and youth respondents associated with smaller effect sizes (B = -0.97, p < 0.001) relative to outcome measures that were evaluator-reported. Results provide initial support for the durability of treatment effects for youth CBTs and highlight the importance of some confounding variables. Implications for improving treatment research standards and prioritizing assessment of long-term follow-up assessment are discussed.     

An Ecological Momentary Intervention Study of Emotional Responses to Smartphone-Prompted CBT Skills Practice and the Relationship to Clinical Outcomes

The practice of therapeutic skills outside of sessions in which they are learned is one presumed key component of cognitive behavioral therapy (CBT). Yet, our understanding of how skills practice relates to clinical outcomes remains limited. Here, we explored patients’ emotional responses to CBT skills practice in a pilot study pairing smartphone-app-delivered skills reminders and guided practice (ecological momentary intervention [EMI]) using ecological momentary assessment (EMA). Participants (n = 25) were adults recently hospitalized for a suicide attempt or severe suicidal thinking. They received brief inpatient CBT (1 to 3 sessions covering core CBT skills from the Unified Protocol), followed by 1 month of EMI and EMA after discharge. On average, participants reported modest reductions in negative affect after skills use (i.e., immediate responses; median time elapsed = 4.30 minutes). Additionally, participants tended to report less negative affect when the timepoint preceding the current assessment included EMI skills practice, rather than EMA alone (i.e., delayed responses; median time elapsed between prompts = 2.17 hours). Immediate effects were unrelated to longer-term clinical outcomes, whereas greater delayed effects were associated with lower symptom severity at follow-up. Future studies should further examine how CBT skills use in daily life may alleviate symptoms.     

Sudden Gains in Internet-Based Cognitive Behavior Therapy for Body Dysmorphic Disorder

Sudden gains have been associated with better short- and long-term treatment outcomes in a number of psychiatric disorders. However, no studies to date have evaluated sudden gains in body dysmorphic disorder (BDD). We used data from a previous randomized controlled trial evaluating the efficacy of an Internet-based cognitive-behavior treatment (CBT) for BDD. The sample consisted of 47 adults diagnosed with BDD. We compared the treatment outcomes of sudden gainers vs. gradual gainers (i.e., treatment responders with no sudden gains) and non-sudden gainers (i.e., gradual gainers plus nonresponders) at posttreatment and 3, 12, and 24 months after the end of the treatment. Twelve (25.5%) participants experienced a sudden gain. Compared to non-sudden gainers and to gradual gainers, sudden gainers showed significantly larger improvements on the Yale-Brown Obsessive-Compulsive Scale modified for BDD at posttreatment (g = 1.23 and g = .91, respectively), and at 3-month (g = 1.23 and g = 1.00, respectively), 12-month (g = 1.12 and g = .91, respectively), and 24-month follow-up (g = 1.11 and g = .97, respectively). This translated into higher rates of treatment responders and remitters in the sudden gainers across all time points. The occurrence of sudden gains in Internet-based CBT for BDD is associated with favorable short- and long-term treatment outcomes. This suggests that a sudden improvement during the treatment could be a marker of good prognosis, while non-sudden—including gradual—gainers are more likely to need continued support or booster sessions. Early identification of patients who are not progressing as expected and subsequent tailoring of the delivered intervention has the potential to improve treatment outcomes in this group.     

Predicting Treatment Outcomes From Internet-Based Cognitive Behavior Therapy for Obsessive–Compulsive Disorder

Internet-based cognitive-behavioral therapy (ICBT) with therapist support shows promise as a treatment for obsessive-compulsive disorder (OCD). Yet, not all patients respond to ICBT. It is therefore important to identify predictors of ICBT outcomes to determine who is likely to benefit. Relative to the large literature on predictors of outcomes for in-person CBT for OCD, very few studies have investigated ICBT predictors. Therefore, we analyzed predictors of outcome in an open trial (n = 30) of ICBT for OCD using the OCD-NET platform, which consists of 10 online modules delivered with therapist support. The Yale-Brown Obsessive-Compulsive Scale (YBOCS) was administered by independent raters as the primary outcome measure at baseline and posttreatment. In this sample, greater baseline OCD severity and OCD-related avoidance behaviors were associated with higher end-state OCD symptoms (i.e., poorer outcome). Patients with a past history of face-to-face CBT for OCD also had worse outcomes. Although these results require replication, these factors may identify individuals at risk for poor ICBT outcomes.     

Cognitive behavior therapy for driving fear: A pilot randomized controlled trial

Fear of driving is common in clinical practice, while its treatment programs are understudied. This is the first randomized controlled trial to evaluate a newly developed protocol for cognitive behavior therapy (CBT) for driving fear compared with a wait list and to use specific assessment scales. 34 participants (30 women, 4 men) in an outpatient psychotherapy clinic were randomly allocated to either 18 sessions of CBT or a wait list (n = 17 each). After treatment, CBT was significantly more efficacious than the wait list with large effect sizes on the Instrument for Fear of Driving (IFD) (Cohen’s d = 2.58) and on the Driving Cognitions Questionnaire (DCQ) (Cohen’s d = 2.14). Driving fear is a condition treatable by CBT and the suggested protocol is safe, feasible and acceptable. Further studies with larger samples and active controls (e.g., virtual reality therapy) are required to draw generalizable conclusions on effect sizes.     

A Nonrandomized Effectiveness Comparison of Broad-Spectrum Group CBT to Individual CBT for Depressed Outpatients in a Community Mental Health Setting

Controlled trials have established the efficacy of cognitive-behavior therapy (CBT) for depression. However, the relative effectiveness of individual versus group treatment formats in real-world settings is less well established. The current study evaluated the effectiveness of group CBT (n = 157) compared to individual CBT (n = 77) for depressed outpatients in a naturalistic setting. Symptom improvements for depression, anxiety, and quality of life were compared between treatment formats in intent-to-treat and completer analyses. Effect sizes and rates of recovery were examined. Results showed that both individual and group CBT were effective, even in the presence of high levels of comorbidity. Whereas individual CBT was associated with larger effect sizes and significantly higher rates of recovery, group CBT compared favorably to outcomes established by past research. A broad-spectrum group CBT program may be a viable treatment option when depression symptoms are less severe and when this format of treatment delivery is desirable.     

Winter Depression Recurrence One Year After Cognitive-Behavioral Therapy, Light Therapy, or Combination Treatment

The central public health challenge in the management of seasonal affective disorder (SAD) is prevention of depression recurrence each fall/winter season. The need for time-limited treatments with enduring effects is underscored by questionable long-term compliance with clinical practice guidelines recommending daily light therapy during the symptomatic months each year. We previously developed a SAD-tailored group cognitive-behavioral therapy (CBT) and tested its acute efficacy in 2 pilot studies. Here, we report an intent-to-treat (ITT) analysis of outcomes during the subsequent winter season (i.e., approximately 1 year after acute treatment) using participants randomized to CBT, light therapy, and combination treatment across our pilot studies (N = 69). We used multiple imputation to estimate next winter outcomes for the 17 individuals who dropped out during treatment, were withdrawn from protocol, or were lost to follow-up. The CBT (7.0%) and combination treatment (5.5%) groups had significantly smaller proportions of winter depression recurrences than the light therapy group (36.7%). CBT alone, but not combination treatment, was also associated with significantly lower interviewer- and patient-rated depression severity at 1 year as compared to light therapy alone. Among completers who provided 1-year data, all statistically significant differences between the CBT and light therapy groups persisted after adjustment for ongoing treatment with light therapy, antidepressants, and psychotherapy. If these findings are replicated, CBT could represent a more effective, practical, and palatable approach to long-term SAD management than light therapy.     

Foster Care Children’s Kinship Involvement and Behavioral Risks: A Longitudinal Study

Researchers have found that individual strengths (e.g., coping, optimism) are protective against behavioral risk (e.g., delinquency, suicide) among traumatized youth in foster care. However, less is known about kinship involvement (i.e., extended family support) as a social strength that can also attenuate the effects of childhood trauma, thereby reducing behavioral risk. Addressing the lack of research on kinship involvement, the present longitudinal study investigated individual strengths (IS) and kinship involvement (KI) as moderators between trauma experiences (TE) and risk behaviors (RB) among 336 youth, ages 6 to 13, who entered the Illinois child welfare system between 2011 and 2014. Controlling for Time 1 (T1) RB, T1 IS, age, gender, and ethnicity, we utilized a three-level Hierarchical Generalized Linear Model to analyze TE?×?KI and TE?×?IS at T2. The study found that KI was negatively associated with RB (β16?=??.08, Event Rate Ratio [ERR]?=?0.92, p?=?<.01), suggesting that youth with more KI had relatively lower RB trajectories. Further, the TE?×?IS interaction was significant in the model (β21?=??.05, ERR?=?0.95, p?<?.01); TE was positively associated with RB at lower levels of IS but not higher levels of IS. These results highlight the importance of assessing children’s kinship networks and individual strengths early in foster care.     

Mediators of Change in Cognitive Behavior Therapy for Clinical Burnout

Evidence supporting the effectiveness of cognitive behavior therapy (CBT) for stress-related illness is growing, but little is known about its mechanisms of change. The aim of this study was to investigate potential mediators of CBT for severe stress in form of clinical burnout, using an active psychological treatment as comparator. We used linear mixed models to analyze data from patients (N = 82) with clinical burnout who received either CBT or another psychological treatment in a randomized controlled trial. Potential mediators (i.e., sleep quality, behavioral activation, perceived competence, and therapeutic alliance) and outcome (i.e., symptoms of burnout) were assessed weekly during treatment. The results showed that the positive treatment effects on symptoms of burnout favoring CBT (estimated between-group d = 0.93) were mediated by improvements in sleep quality, ab = -0.017, 95% CI_asymmetric [-0.037, -0.002], and increase in perceived competence, ab = -0.037, 95% CI_asymmetric [-0.070, -0.010]. Behavioral activation, ab = -0.004 [-0.016, 0.007], and therapeutic alliance, ab = 0.002 [-0.006, 0.011], did not significantly mediate the difference in effects between the treatments. Improving sleep quality and increasing perceived competence may thus constitute important process goals in order to attain symptom reduction in CBT for clinical burnout.     

Current Treatment Practices for Children and Adults With Trichotillomania: Consensus Among Experts

Very little is known regarding the efficacy of pharmacological and psychosocial treatments for children and adults with trichotillomania (TTM). Given this dearth of information, the present investigation sought to examine the treatment practices of members of the nationally recognized Trichotillomania Learning Center–Scientific Advisory Board (TLC-SAB) and practitioners known by members of the TLC-SAB to possess extensive experience working with this population. The responses of 67 practitioners to an Internet-based survey were examined. Our results clearly indicate that cognitive-behavioral treatment (CBT) is the treatment of choice for both children and adults with TTM. In particular, several components of CBT (i.e., awareness training, self-monitoring, competing response training, habit reversal training, and stimulus control) are implemented most often. Selective serotonin reuptake inhibitors (SSRIs, e.g., citalopram, fluoxetine) and serotonin-norepinepherine reuptake inhibitors (SNRIs, e.g., venlafaxine, duloxetine) were prescribed most frequently; however, these results are preliminary given our small sample of prescribing practitioners (n = 11). Taken together, these findings are a critical starting point to advancing the understanding of efficacious interventions for the treatment of individuals with TTM. Clinical and research implications, future areas of research, and study limitations are discussed.     

Demonstration of an Integrated Treatment for Smoking Cessation and Anxiety Symptoms in People With HIV: A Clinical Case Study

Despite high rates of co-occurring tobacco use and anxiety symptoms and disorders among persons with HIV, evidence-based interventions for these individuals are not yet available. The present study sought to evaluate an integrated treatment model addressing smoking cessation and anxiety sypmtoms among HIV-positive smokers. Treatment was an 8-week intervention integrating a standard smoking cessation protocol (i.e., cognitive-behavioral therapy [CBT], nicotine replacement therapy) with CBT for anxiety. Inclusion criteria were 18–65 years of age, ≥ 10 cigarettes/day, State–Trait Anxiety Inventory [STAI-T] score of > 39, and moderate motivation (i.e., ≥ 5 out of 10 on a 10-point Likert scale) to quit smoking. Primary outcomes included scores on the Anxiety Sensitivity Index (ASI) and cigarettes smoked per day. Self-reported abstinence was biochemically verified by carbon monoxide breath analysis. Three male participants (mean age 49.3, SD = 9.1) completed through 2-month follow-up. At baseline all participants reported smoking an average of 20 cigarettes per day. Two participants quit smoking and maintained abstinence by the 2-month follow-up, and demonstrated a reduction in ASI scores. Participant 3 continued to smoke but at a reduced rate. Participants’ response to cognitive and behavioral strategies (e.g., creating balanced thoughts, interoceptive exposures) will be discussed. Clinical lessons learned include use of a flexible approach to cognitive restructuring, use of imaginal and in vivo exposures in session to better prepare patients for homework practice, and flexibility in delivering the treatment in an individual or group format. This clinical presentation provides preliminary support for the feasibility and initial effectiveness of an integrated treatment to reduce anxiety symptoms and aid in smoking cessation in anxious, HIV-positive smokers.     

Predictors of Symptom Trajectories After Cognitive-Behavioral Therapy in Adolescents With an Age-Adapted Diagnosis of Binge-Eating Disorder

Although evidence demonstrated efficacy of cognitive-behavioral therapy (CBT) in adolescents with binge-eating disorder (BED), treatment response is heterogeneous. This study uniquely examined baseline predictors of symptom trajectories in N = 73 adolescents (12–20 years) with an age-adapted diagnosis of BED (i.e., based on objective and subjective binge-eating episodes). Based on evidence from adult BED, dietary restraint, overvaluation of weight/shape, and depressive symptoms were used to predict changes in abstinence from binge eating and eating disorder psychopathology after 4 months of individual, face-to-face CBT using growth models. Longitudinal trajectories of abstinence from objective and subjective binge eating and global eating disorder psychopathology assessed via the Eating Disorder Examination were modeled for five time points (pre- and posttreatment, 6-, 12-, and 24-month follow-up). Beyond significant, positive effects for time, no significant predictors for abstinence from binge eating emerged. In addition to significant decreases in eating disorder psychopathology over time, higher pretreatment dietary restraint and overvaluation of weight/shape significantly predicted greater decreases in eating disorder psychopathology over time. Consistent with research in adult BED, adolescents with higher than lower eating disorder-specific psychopathology especially benefit from CBT indicating that restrained eating and overvaluation of weight/shape may be BED-specific prognostic characteristic across developmental stages. Future predictor studies with an additional focus on potential age-specific predictors, such as family factors, and within-treatment processes may be critical in further evaluating treatment-related symptom trajectories in adolescent BED.     

Letting a little nonverbal air into the room: Insights from acceptance and commitment therapy Part 1: Philosophical and theoretical underpinnings

In recent years, a new “wave” of mindfulness based Cognitive Behavior Therapies (CBT) has become popular. Such approaches include Acceptance and Commitment Therapy (ACT; Acceptance and commitment therapy: An experiential approach to behaviour change. New York: Guilford Press, 1999), Mindfulness-based Cognitive Therapy for Depression (Mindfulness-based cognitive therapy for depression: A new approach to preventing relapse. New York: Guilford Press, 2002), and Mindfulness-based Stress Management (Full catastrophe living: using the wisdom of your body and mind to face stress, pain, and illness. New York: Dell Publishing, 1990). In contrast to traditional CBT, these approaches often minimize attempts to change the form and frequency of dysfunctional thoughts. Is there any way to integrate traditional CBT with mindfulness based CBT? To answer this question, we discuss the philosophical and theoretical underpinnings of one form of traditional CBT (Rational-Emotive and Cognitive Behavioral Therapy) and one form of mindfulness based CBT (ACT). We argue that some aspects of each therapy can be integrated. However, in order to prevent techniques from being used haphazardly or inconsistently, we suggest that the different forms of CBT need to be driven by a common philosophical orientation (e.g., functional contextualism) and theoretical orientation (e.g., Relational Frame Theory).     

Cognitive Mediators of Treatment for Social Anxiety Disorder: Comparing Acceptance and Commitment Therapy and Cognitive-Behavioral Therapy

Objective

To assess the relationship between session-by-session mediators and treatment outcomes in traditional cognitive-behavioral therapy (CBT) and acceptance and commitment therapy (ACT) for social anxiety disorder.

Method

Session-by-session changes in negative cognitions (a theorized mediator of CBT) and experiential avoidance (a theorized mediator of ACT) were assessed in 50 adult outpatients randomized to CBT (n = 25) or ACT (n = 25) for DSM-IV social anxiety disorder.

Results

Multilevel modeling analyses revealed significant nonlinear decreases in the proposed mediators in both treatments, with ACT showing steeper decline than CBT at the beginning of treatment and CBT showing steeper decline than ACT at the end of treatment. Curvature (or the nonlinear effect) of experiential avoidance during treatment significantly mediated posttreatment social anxiety symptoms and anhedonic depression in ACT, but not in CBT, with steeper decline of the Acceptance and Action Questionnaire at the beginning of treatment predicting fewer symptoms in ACT only. Curvature of negative cognitions during both treatments predicted outcome, with steeper decline of negative cognitions at the beginning of treatment predicting lower posttreatment social anxiety and depressive symptoms.

Conclusions

Rate of change in negative cognitions at the beginning of treatment is an important predictor of change across both ACT and CBT, whereas rate of change in experiential avoidance at the beginning of treatment is a mechanism specific to ACT.     

Characteristics and Components of the TADS CBT Approach

In this paper, we describe the Acute phase of a cognitive-behavioral therapy (CBT) developed for and utilized in the Treatment for Adolescents with Depression Study (TADS). The Acute phase of TADS CBT consists of eight skills that were considered essential to any CBT intervention for adolescent depression (e.g., mood monitoring, increasing pleasant activities, identifying cognitive distortions and developing realistic counter-thoughts). In addition, five optional individual CBT skills (e.g., relaxation, affect regulation) can be incorporated into treatment, depending on the needs of the adolescent. We describe each of these individual skills by reviewing the rationale for their inclusion in the treatment protocol and describing the format that is used to teach the skill area. Recommendations are provided for dealing with common challenges that can occur in the teaching of each skill module. It is our hope that clinicians will find this a useful introduction to this particular form of treatment and a practical guide to dealing with clinical problems common to the delivery of any cognitive behavioral intervention with depressed teens.     

Direction of threat attention bias predicts treatment outcome in anxious children receiving cognitive-behavioural therapy

BackgroundA bias to selectively direct attention to threat stimuli is a cognitive characteristic of anxiety disorders. Recent studies indicate that individual differences in pre-treatment threat attention bias predict treatment outcomes from cognitive-behavioural therapy (CBT) in anxious individuals. However, there have been inconsistent findings regarding whether attention bias towards threat predicts better or poorer treatment outcome.MethodThis longitudinal study examined treatment outcomes in 35 clinically-anxious children following a 10-week, group-based CBT program, as a function of whether children showed a pre-treatment attention bias towards or away from threat stimuli. The effect of CBT on attention bias was also assessed.ResultsBoth groups showed significant improvement after receiving CBT. However, anxious children with a pre-treatment attention bias towards threat showed greater reductions not only in anxiety symptom severity, but also in the likelihood of meeting diagnostic criteria for anxiety disorders at post-treatment assessment, in comparison with anxious children who showed a pre-treatment attention bias away from threat. Children who had a pre-treatment bias away from threat showed a reduction in this bias over the course of CBT.ConclusionsFindings suggest that pre-existing differences in the direction of attention towards versus away from threat could have important implications for the treatment of anxious children.     

Longitudinal treatment mediation of traditional cognitive behavioral therapy and acceptance and commitment therapy for anxiety disorders

ObjectiveTo assess the relationship between session-by-session putative mediators and treatment outcomes in traditional cognitive behavioral therapy (CBT) and acceptance and commitment therapy (ACT) for mixed anxiety disorders.MethodSession-by-session changes in anxiety sensitivity and cognitive defusion were assessed in 67 adult outpatients randomized to CBT (n = 35) or ACT (n = 32) for a DSM-IV anxiety disorder.ResultsMultilevel mediation analyses revealed significant changes in the proposed mediators during both treatments (p < .001, d = .90–1.93), with ACT showing borderline greater improvements than CBT in cognitive defusion (p = .05, d = .82). Anxiety sensitivity and cognitive defusion both significantly mediated post-treatment worry; cognitive defusion more strongly predicted worry reductions in CBT than in ACT. In addition, cognitive defusion significantly mediated quality of life, behavioral avoidance, and (secondary) depression outcomes across both CBT and ACT (p < .05, R² change = .06–.13), whereas anxiety sensitivity did not significantly mediate other outcomes.ConclusionsCognitive defusion represents an important source of therapeutic change across both CBT and ACT. The data offered little evidence for substantially distinct treatment-related mediation pathways.