Introduction: A wide range of genetic, neurological, psychological, and social factors are involved in the etiology of Obsessive-Compulsive Disorder (OCD), and its onset can occur through various pathways. This study aimed to determine the mediating role of thought-action fusion and experiential avoidance in the relationship between childhood trauma and OCD symptoms in adults.
Methods: The descriptive-correlation research method was a structural equations model. The statistical population of this study consisted of all individuals referring to clinics and psychological service centers in Tehran, Iran, in 2024. Of these individuals, 260 were selected using convenience sampling. The tools used in this study include: Childhood Trauma Questionnaire, Fusion of Thought-Action Scale, Acceptance and Action Questionnaire (AAQ-II), and the Obsessive-compulsive Disorder-revision (OCDR). Data analysis was also performed using Pearson correlation, structural equation modeling, and SPSS-26 and AMOS-24 software.
Results: The results revealed that the research model had a good fit and the direct effect of childhood trauma (P<0.001; t=5.64, β=0.33), thought-action fusion (P<0.001; t=11.27; β=0.82), and experiential avoidance (P<0.001; t=10.68; β=0.66) on OCD symptoms was significant and positive. Furthermore, the variable indirect effect of childhood trauma on OCD symptoms through the mediating role of thought-action fusion was meaningful (b=0.66, P<0.05), and the indirect effect of childhood trauma on OCD symptoms through the role of the mediator of experiential avoidance was significant (P<0.05, b=0.53). In addition, the results showed that the research variables explain a total of 68% of the variance of OCD symptoms.
Conclusion: The results indicated the mediating role of thought-action fusion and experiential avoidance between childhood trauma and OCD symptoms. These findings show that reducing experiential avoidance and thought-action fusion may be a suitable way to complete the treatment of OCD symptoms in people suffering from childhood trauma.
Type of Study:
Research |
Received: 2025/03/15 | Accepted: 2025/07/20 | Published: 2025/08/18