A randomized controlled trial of an online group-based internal family systems treatment for posttraumatic stress disorder: The Program for Alleviating and Resolving Trauma and Stress (PARTS) study.

Psychological Trauma Theory Research Practice and Policy 2026 Open access

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Authors: Diane Joss, Alexandra Comeau, River Chevannes, Gareth J Parry, Hanna Soumerai Rea, Javier A Barria, Clare Bumpus, Ashley E. Rector, Adhithi Rajan, Joseph A. Rosansky, Fiona Kate Rice, Mary Catherine Ward
+6 more Laure Tobiasz Veltz, Dilara Ally, Lawrence G. Rosenberg, Martha Sweezy, David Adam Lovas, Zev Schuman‐Olivier
DOI: 10.1037/tra0002089
Cited by: 1

Abstract

OBJECTIVE: Group-based posttraumatic stress disorder (PTSD) treatment options are in high demand, especially at community health centers with limited staff and resources. We have developed an online telehealth-based, 16-week group psychotherapeutic intervention program called Program for Alleviating and Resolving Trauma and Stress (PARTS) based on the Internal Family Systems psychotherapy framework. The goal of this study is to test the feasibility, acceptability, and preliminary efficacy of PARTS through a randomized controlled trial. METHOD: , fifth edition. RESULTS: < .001) without significant differences between the two treatment arms. CONCLUSIONS: This study demonstrated the feasibility and acceptability of PARTS as a group-based PTSD treatment. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

Fields of Study & Subjects

Posttraumatic Stress Disorder Research Digital Mental Health Interventions Family and Patient Care in Intensive Care Units

Publication details

Journal / source
Psychological Trauma Theory Research Practice and Policy
Publisher
American Psychological Association (APA)
Publication date
29 January 2026
Language
EN