psychometric properties of the persian version of self-determination parent perception scale

Objectives: 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’ 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. methods: 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. results: 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’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. discussion: 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’ perspectives and can be applied by professionals in rehabilitation centers and those studying on human behavior.