Psychometric properties of persian version of Fear of Self Questionnaire related Obsessive Compulsive Disorder

Introduction: The cognitive aspect of obsession involves the evaluation of oneself, which is often accompanied by a fear of what one is -or can be. Aim: The aim of this study was to investigate the psychometric properties of the Fear of Self Questionnaire, which measures the level of this fear in the context of obsessive-compulsive disorder. Method: The present study was a descriptive study and its statistical population included all students of Shiraz University in the academic year 2020-2021. The sample of the present study also included 360 students who were participated in this research by answering the online link of questions. In addition to the Persian version of the Fear of Self Questionnaire, other research tools were included the Obsessive Beliefs Questionnaire (OBQ-42), the Maudsley Obsessional Compulsive inventory (MOCI), the Self-Ambivalence Measure (SAM), and the Depression, Anxiety, and Stress Scale (DASS-21). Data analysis was conducted by confirmatory factor analysis, convergent validity, Cronbach's alpha coefficient, and test-retest reliability coefficient in SPSS-24 and AMOS-22 software. Results: The results of factor analysis confirmed the one-factor structure in the Persian version of the Fear of Self Questionnaire. Cronbach's alpha and test-retest coefficients were 0.94 and 0.86, respectively, that shows the internal consistency and optimal reliability of this questionnaire. In addition, the correlation between the scores of the Persian version of the questionnaire and other research tools ranged from 0.49 to 0.81, which has confirmed its convergent validity. Conclusion: Considering the psychometric properties of the Persian version of the Fear of Self Questionnaire, its usage can be recommended in research related to the symptoms and various dimensions of obsession.