Comparing the effectiveness of acceptance‑based behavior therapy and applied relaxation on acceptance of internal experiences, engagement in valued actions and quality of life in generalized anxiety disorder

Background: Acceptance‑based behavior therapy (ABBT) was developed based on the theory that generalized anxiety disorder (GAD) is maintained through a reactive and fused relationship with internal experiences and a tendency toward experiential avoidance and behavioral restriction. ABBT specifically targets these elements. Here, we aimed to compare ABBT to the applied relaxation (AR), which is the most utilized psychological therapy for GAD. Materials and Methods: This study was a randomized clinical trial study. The sample included 18 GAD patients who were referred by an expert psychiatrist to Psychosomatic Research Center of Isfahan University of Medical Sciences. Patients were assigned into two groups (ABBT and AR group). Both groups received routine drug therapies by psychiatrists. The ABBT and AR were applied in 12 weekly sessions. The instruments used in the study included Valued Living Questionnaire, Action, and Acceptance Questionnaire, and Short‑Form Health Survey‑12 revised Version (SF‑12V2). The data were analyzed using the multivariate analysis of variance. Results: No significant differences were found between ABBT and AR groups in their acceptance of internal experiences, engagement in meaningful activities and quality of life (P > 0.05). Conclusion: The current study compared ABBT to the most utilized psychological therapy for GAD; i.e., AR. ABBT and AR have similar efficacy on acceptance of internal experiences, valued actions and quality of life.