en روانسنجي Psychometric پژوهشي Original Research Article <strong>Objective</strong>: This study aimed to evaluate the psychometric properties of the Persian version of the Committed Action Questionnaire (CAQ-8) in a non-clinical sample. The study evaluated the factor analyses, reliability, and validity of the CAQ-8 in an Iranian sample.<br> <strong>Methods</strong>: The psychometric properties of the CAQ-8 were investigated in a Persian student (n=180), through convenient sampling for data gathering. Participants filled out a battery of questionnaires, including CAQ-8, medical outcomes study questionnaire 36-item Short-Form Health Survey (SF-36), Acceptance and Action Questionnaire (AAQ-II), and Depression, Anxiety, And Stress Scale (DASS-21). Confirmatory factor analyses and goodness of fit indexes were used to examine the reliability and validity of the Persian version of the CAQ-8.<br> <strong>Results</strong>: The Persian version of the CAQ-8 revealed satisfactory levels of internal consistency (&alpha;=0.77), and significant association with various indexes of theoretically-related instruments such as DASS-21, SF-36, and AAQ-II. Confirmatory factor analyses demonstrated that the Persian version of the CAQ-8 yielded a 7-item questionnaire by the two-factor model.&nbsp;<br> <strong>Conclusion</strong>: The Persian version of CAQ appears to be a valid, reliable, and adequate measure for the assessment of the concept of committed action in the Iranian sample. Committed action, Validity, Reliability, Psychometrics, Confirmatory factor analyses 153 162 http://jpcp.uswr.ac.ir/browse.php?a_code=A-10-680-1&slc_lang=en&sid=1 Maryam Mazloom mazloom.maryam@yahoo.com 0000-0002-7285-2232 Yes Department of Clinical Psychology, Faculty of psychology and education, Kharazmi University, Tehran, Iran. Shahram Mohammadkhani sh.mohammadkhani@gmail.com 0000-0001-7541-6412 No Department of Clinical Psychology, Faculty of psychology and education, Kharazmi University, Tehran, Iran. Mehdi Akbari akbari.psy@gmail.com 0000-0003-1576-5711 No Department of Clinical Psychology, Faculty of psychology and education, Kharazmi University, Tehran, Iran. Jafar Hasani hasanimehr57@yahoo.com 0000-0002-7061-9330 No Department of Clinical Psychology, Faculty of psychology and education, Kharazmi University, Tehran, Iran.