Psychometric Validation of the Persian Version of the Experiential Avoidance Rating Scale (EARS) and Its Application in Assessing Psychological Inflexibility inPersian-Speaking Populations

This study evaluated the psychometric properties of the Persian version of the Experiential Avoidance Rating Scale (EARS) to provide a reliable measure of experiential avoidance for Persian-speaking populations. A cross-sectional design was employed, involving 700 university students from Tehran, with a mean age of 27.71 years (SD = 9.35). The EARS was translated using a forward-backward method to ensure cultural and conceptual equivalence. Confirmatory factor analysis supported a single-factor model with an excellent fit (χ²(9) = 41.81, CFI = 0.98, RMSEA = 0.072). The scale demonstrated good internal consistency (α = 0.81). Concurrent validity was supported by significant correlations with the Acceptance and Action Questionnaire-II (r = 0.60) and the Brief Experiential Avoidance Questionnaire (r = 0.40). Convergent validity was further evidenced by correlations with related psychological constructs, such as PTSD symptoms and negative affect, while divergent validity was confirmed by a non-significant relationship with traditional masculinity norms. These findings indicate that the Persian version of the EARS is a reliable and valid tool for assessing experiential avoidance. Its single-factor structure aligns with the original scale, supporting its cross-cultural applicability in understanding experiential avoidance. This study highlights the Persian EARS as an effective measure of psychological inflexibility for Persian-speaking populations, with potential utility in both research and clinical settings. Future research should explore its applicability in broader clinical populations, expanding its role in assessing constructs related to psychological flexibility.