Louis G. Castonguay

Predicting the Effect of Cognitive Therapy for Depression: A Study of Unique and Common Factors

The ability of several process variables to predict therapy outcome was tested with 30 depressed clients who received cognitive therapy with or without medication. Two types of process variables were studied: 1 variable that is unique to cognitive therapy and 2 variables that this approach is assumed to share with other forms of treatment. The clients improvement was found to be predicted by the 2 common factors measured: the therapeutic alliance and the clients emotional involvement (experiencing). The results also indicated, however, that a unique aspect of cognitive therapy (i.e., therapists focus on the impact of distorted cognitions on depressive symptoms) correlated negatively with outcome at the end of treatment. Descriptive analyses that were conducted to understand this negative correlation suggest that therapists sometimes increased their adherence to cognitive rationales and techniques to correct problems in the therapeutic alliance. Such increased focus, however, seems to worsen alliance strains, thereby interfering with therapeutic change.

The working alliance: Where are we and where should we go?

This article describes important findings that have emerged from decades of research on the working alliance, as well as some of the clinical implications of these findings. In addition, future directions of research on this construct are suggested. Our hope is that this article will provide useful heuristics for better understanding the alliance, the therapeutic relationship more broadly, and the process of therapeutic change in general. (PsycINFO Database Record (c) 2010 APA, all rights reserved).

Therapeutic alliance in depression treatment: Controlling for prior change and patient characteristics

Although many studies report that the therapeutic alliance predicts psychotherapy outcome, few exclude the possibility that this association is accounted for by 3rd variables, such as prior improvement and prognostically relevant patient characteristics. The authors treated 367 chronically depressed patients with the cognitive-behavioral analysis system of psychotherapy (CBASP), alone or with medication. Using mixed effects growth-curve analyses, they found the early alliance significantly predicted subsequent improvement in depressive symptoms after controlling for prior improvement and 8 prognostically relevant patient characteristics. In contrast, neither early level nor change in symptoms predicted the subsequent level or course of the alliance. Patients receiving combination treatment reported stronger alliances with their psychotherapists than patients receiving CBASP alone. However, the impact of the alliance on outcome was similar for both treatment conditions.

Training implications of harmful effects of psychological treatments.

The goal of this article is to delineate training implications regarding harmful effects associated with psychotherapy. The authors strongly recommend that trainees be made aware of (and encouraged to examine carefully) the potentially harmful treatments that have been recently identified (Lilienfeld, 2007). Consistent with a broad perspective on evidence-based practice, it is also argued that additional guidelines for the prevention and repair of harmful impacts can be derived from psychotherapy research on process (technique and relationship) and participant (client and therapist) variables. For example, rigid adherence to the application of psychotherapy techniques can be a potentially harmful therapist behavior that necessitates careful training on the nature and flexible use of interventions. Furthermore, the authors suggest that trainers and supervisors tentatively consider training implications linked to clinical observations and theoretical assertions, such as the premature use of clinical interpretations, with the assumption that more confidence in such therapeutic guidelines can be gained when they are supported by multiple knowledge sources (empirical, clinical, conceptual). Finally, training implications related to the monitoring of harmful effects in terms of treatment outcome and process are demarcated.

A randomized controlled trial of cognitive-behavioral therapy for generalized anxiety disorder with integrated techniques from emotion-focused and interpersonal therapies.

OBJECTIVE Recent models suggest that generalized anxiety disorder (GAD) symptoms may be maintained by emotional processing avoidance and interpersonal problems. METHOD This is the first randomized controlled trial to test directly whether cognitive-behavioral therapy (CBT) could be augmented with the addition of a module targeting interpersonal problems and emotional processing. Eighty-three primarily White participants (mean age = 37) with a principle diagnosis of GAD were recruited from the community. Participants were assigned randomly to CBT plus supportive listening (n = 40) or to CBT plus interpersonal and emotional processing therapy (n = 43) within a study using an additive design. Doctoral-level psychologists with full-time private practices treated participants in an outpatient clinic. Using blind assessors, participants were assessed at pretreatment, posttreatment, 6-month, 1-year, and 2-year follow-up with a composite of self-report and assessor-rated GAD symptom measures (the Penn State Worry Questionnaire; T. J. Meyer, M. L. Miller, R. L. Metzger, & T. D. Borkovec, 1990; Hamilton Anxiety Rating Scale; M. Hamilton, 1959; assessor severity rating; State-Trait Anxiety Inventory-Trait Version; C. D. Spielberger, R. L. Gorsuch, R. Lushene, P. R. Vagg, & G. A. Jacobs, 1983) as well as with indices of clinically significant change. RESULTS Mixed models analysis of all randomized participants showed very large within-treatment effect sizes for both treatments (CI = [-.40, -.28], d = 1.86) with no significant differences at post (CI = [-.09, .07], d = .07) or 2-year follow-up (CI = [-.01, .01]), d = .12). There was also no statistical difference between compared treatments on clinically significant change based on chi-square analysis. CONCLUSIONS Interpersonal and emotional processing techniques may not augment CBT for all GAD participants. Trial Registry name: Clinical Trials.gov, Identifier: NCT00951652.

Therapist effectiveness: implications for accountability and patient care.

Abstract Significant therapist variability has been demonstrated in both psychotherapy outcomes and process (e.g., the working alliance). In an attempt to provide prevalence estimates of “effective” and “harmful” therapists, the outcomes of 6960 patients seen by 696 therapists in the context of naturalistic treatment were analyzed across multiple symptom and functioning domains. Therapists were defined based on whether their average client reliably improved, worsened, or neither improved nor worsened. Results varied by domain with the widespread pervasiveness of unclassifiable/ineffective and harmful therapists ranging from 33 to 65%. Harmful therapists demonstrated large, negative treatment effect sizes (d=−0.91 to −1.49) while effective therapists demonstrated large, positive treatment effect sizes (d=1.00 to 1.52). Therapist domain-specific effectiveness correlated poorly across domains, suggesting that therapist competencies may be domain or disorder specific, rather than reflecting a core attribute or underlying therapeutic skill construct. Public policy and clinical implications of these findings are discussed, including the importance of integrating benchmarked outcome measurement into both routine care and training.

Worry and Generalized Anxiety Disorder: A Review and Theoretical Synthesis of Evidence on Nature, Etiology, Mechanisms, and Treatment

Generalized anxiety disorder (GAD) is associated with substantial personal and societal cost yet is the least successfully treated of the anxiety disorders. In this review, research on clinical features, boundary issues, and naturalistic course, as well as risk factors and maintaining mechanisms (cognitive, biological, neural, interpersonal, and developmental), are presented. A synthesis of these data points to a central role of emotional hyperreactivity, sensitivity to contrasting emotions, and dysfunctional attempts to cope with strong emotional shifts via worry. Consistent with the Contrast Avoidance model, evidence shows that worry evokes and sustains negative affect, thereby precluding sharp increases in negative emotion. We also review current treatment paradigms and suggest how the Contrast Avoidance model may help to target key fears and avoidance tendencies that serve to maintain pathology in GAD.

AN OPEN TRIAL OF INTEGRATIVE THERAPY FOR GENERALIZED ANXIETY DISORDER

Cognitive- behavioral therapy (CBT), although effective, has the lowest average effect size for generalized anxiety disorder (GAD), when compared to effect sizes of CBT for other anxiety disorders. Additional basic and applied research suggests that although interpersonal processes and emotional avoidance may be maintaining GAD symptomatology, CBT has not sufficiently addressed interpersonal issues or emotion avoidance. This study aimed to test the feasibility and preliminary efficacy of an integrative psychotherapy, combining CBT with techniques to address interpersonal problems and emotional avoidance. Eighteen participants received 14 sessions of CBT plus interpersonal emotional processing therapy and three participants (for training and feasibility purposes) received 14 sessions of CBT plus supportive listening. Results showed that the integrative therapy significantly decreased GAD symptomatology, with maintenance of gains up to 1 year following treatment. In addition, comparisons with extant literature suggested that the effect size for this new GAD treatment was higher than the average effect size of CBT for GAD. Results also showed clinically significant change in GAD symptomatology and interpersonal problems with continued gains during the 1-year follow-up. Implications of these results are discussed.

Effectiveness of targeting the vulnerability factors of depression in cognitive therapy.

I. H. Gotlib and C.L. Hammens (1992) psychopathology model of depression was used as a conceptual framework for studying the process of change in an effective course of cognitive therapy (CT) for depression. Archived CT transcripts from 30 depressed outpatients in the Cognitive-Pharmaco-therapy Treatment project (S. D. Hollon et al., 1992) were studied. An observational coding system was used to assess whether therapists focused on the cognitive, interpersonal, and developmental vulnerabilities of depression and whether these interventions were associated with symptom reduction. Therapists maintained a primarily cognitive focus, but it was interventions that addressed the interpersonal and developmental domains that were associated with improvement. A developmental focus also predicted a longer time of recovery and better global functioning over the 24-month followup period. These findings are consistent with recent theoretical developments in cognitive therapy and with the psychopathology research on depression.

HELPFUL AND HINDERING EVENTS IN PSYCHOTHERAPY: A PRACTICE RESEARCH NETWORK STUDY

This paper presents the findings of a psychotherapy process study conducted within the Pennsylvania Psychological Association Practice Research Network (PPA-PRN). The investigation was the product of a long-term collaborative effort, both in terms of the study design and implementation, between experienced clinicians of various theoretical orientations and full-time psychotherapy researchers. Based on a relatively large sample of clients seen in independent practice settings, close to 1,500 therapeutic events (described by clients and therapists as being particularly helpful or hindering) were collected. These events were coded by three independent observers using a therapy content analysis system. Among the findings, both clients and therapists perceived the fostering of self-awareness as being particularly helpful. The results also point to the importance of paying careful attention to the therapeutic alliance and other significant interpersonal relationships. The merits and difficulties of conducting scientifically rigorous and clinically relevant studies in naturalistic contexts are also discussed.