Psychometric Properties of the Persian Version of the Obsessive Distrust Inventory for Iranian College Students

Objectives:

 Despite the importance of obsessive distrust as a common type of relationship obsessive-compulsive disorder (ROCD), there is no suitable scale to measure this structure in the Iranian population. Therefore, this study aims to investigate the psychometric properties of the Persian version of the obsessive distrust inventory (ODIS) for Iranian college students

Methods:

 In this descriptive psychometrics study, 365 married students from Shahid Beheshti University of Medical Sciences in 2021-2022 participated. They were selected using a convenience sampling method. The internal consistency of the Persian ODIS was evaluated using Cronbach’s alpha coefficient. Construct validity was assessed using confirmatory factor analysis (CFA). Depression anxiety and stress scale-21 (DASS-21), partner-related obsessive-compulsive symptom inventory (PROCSI), and obsessional compulsive inventory – revised (OCI-R) were used to evaluate convergent validity.

Results:

 The CFA results confirmed the single-factor structure of the Persian ODIS. The convergent validity assessment showed the significant positive correlation of the Persian ODIS with the scores of DASS-21, PROCSI, and OCI-R (P<0.01). The Cronbach’s alpha for the overall scale was obtained as 0.94

Conclusion:

 The Persian ODIS has acceptable validity and reliability for the Iranian population. It can be used in clinical and research fields to screen, diagnose, and monitor obsessive distrust in ROCD.