en روانشناسی Psychology پژوهشي Original Research Articles <div style="text-align: justify;"><strong>Objectives</strong>: Self-determination is a significant skill in the proper transition from adolescence to adulthood. Parents play an important role in assessing the self-determination of their children. Currently, there is no valid instrument in Iran to assess parents&rsquo; views about the self-determination of their adolescents. The present study was conducted to determine the psychometric properties of the Persian version of the Self-determination Parent Perception Scale (SDPPS) in an Iranian population.<br> <strong>Methods</strong>: In this descriptive psychometric study, the original version of SDPPS was translated using the forward-backward method. The content validity index and content validity ratio of the questionnaire were confirmed by a panel of 15 experts, and its face validity was evaluated among 10 parents of the adolescents. Exploratory factor analysis was conducted on 125 parents of adolescents (aged 14-18 years) who were selected by convenience sampling with maximum variation. Its reliability and internal consistency were also assessed using test-retest and in a group of 17 parents, respectively. The obtained data were analyzed by SPSS V. 18.<br> <strong>Results</strong>: The items were modified at the face validity stage and approved at the content validity stage. Five factors by explaining 54.14% of the variance and deleting four items were confirmed at the construct validity stage using exploratory factor analysis. A Cronbach&rsquo;s alpha of 0.93 was obtained for the total scale and 0.79 to 0.85 for the five subscales of the SDPPS. The intra-class correlation coefficient with 95% CI (0.82-0.98) was 0.83 indicating good reliability of the questionnaire.<br> <strong>Discussion</strong>: The Persian version of SDPPS showed acceptable validity and reliability in explaining the self-determination of adolescents with and without disabilities based on the parents&rsquo; perspectives and can be applied by professionals in rehabilitation centers and those studying on human behavior.</div> Adolescents, Factor analysis, Parents, Psychometrics, Self-determination 23 30 http://irj.uswr.ac.ir/browse.php?a_code=A-10-337-2&slc_lang=en&sid=1 Elahe Hojati Abed Elahehojatiabed@gmai.com 0000-0001-5709-9791 No Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran. Malahat Akbarfahimi akbarfahimi.m@iums.ac.ir 0000-0001-9966-3143 Yes Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran. Narges Shafaroudi shafarodi.n@iums.ac.ir 0000-0003-0346-564x No Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran. Armin Zareian a.zareian@ajaums.ac.ir 0000-0002-6983-0569 No Department of Community Health, School of Nursing, AJA University of Medical Sciences, Tehran, Iran. Akram Parand akramparand@yahoo.com 0000-0002-2818-7335 No School of Psychology, Tehran University, Tehran, Iran. Samaneh Karamali Esmaieli Esmaeili.s@iums.ac.ir 0000-0002-0162-3424 No Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.