Psychometric Properties of the Persian Version of PID5BF + M in Iranian Drug Users.

Background: This study aimed to adapt and evaluate the psychometric properties of the PID5BF + M as a brief measure for assessing DSM-5 and ICD-11 personality disorder traits in Iranian drug users. The sample consisted of 380 participants, including both clinical (28.68%) and nonclinical (71.32%) groups, with 43.7% female participants. All participants completed the Personality Inventory for DSM-5 and ICD-11 Brief Form-Modified (PID5BF + M), the Symptom Checklist-25 (SCL-25), the Brief Five-Factor Inventory (BFI-10), the Level of Personality Functioning Scale-Brief Form (LPFS-BF 2.0), and the Alcohol, Smoking, and Substance Involvement Screening Test (ASSIST).

Results: The findings revealed that the PID5BF + M demonstrates strong psychometric properties, with a six-factor structure that is culturally appropriate for the Iranian population. Significant associations were found between the ICD-11/DSM-5 traits and both internalizing and externalizing symptoms, as well as with normal personality factors.

Conclusions: The PID5BF + M appears to be a valid and reliable tool for assessing DSM-5 and ICD-11 personality disorder traits in Iranian drug users, showing promising potential for use in clinical and research settings within this cultural context.