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Updated: Aug 20, 2026

Exploring the Neural Correlates of Cognitive Reappraisal in Obsessive-Compulsive Disorder Using Task-based Functional Magnetic Resonance Imaging
Published on: March 14, 2025
Thematic similarity and clinical outcome in obsessive-compulsive disorder group treatment
Peter J Norton1, Maureen L Whittal
1Department of Psychology, University of Houston, Houston, Texas 77204-5022, USA. pnorton@uh.edu
Abstract:
Despite the existence of efficacious cognitive-behavioral group treatments for obsessive-compulsive disorder (OCD), no data has been presented regarding the potential impact of symptom or thematic similarity among group members. The purpose of this study was to evaluate the effect of thematic similarity among group members on outcome after cognitive-behavioral (CBT) or exposure/response prevention (ERP) treatment for OCD. Results consistently demonstrated across a range of measures no impact of thematic similarity, nor any interaction of similarity by treatment type (ERP versus CBT), on treatment outcome. These data suggest that OCD treatment groups can be formed based on consecutive client intake without negatively impacting efficacy.
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