Validity and Reliability of Persian version of the sport multidimensional perfectionism scale -2

Perfectionism، as a personality characteristic، is considered as an enduring tendency to set exceedingly high standards and struggle to realize them. The purpose of this study was to determine validity and reliability of the Persian version of Dun and colleagues sport perfectionism-2، respectively. In this regard and to confirm the construct validity of the questionnaire، 420 male and female athletes with different skill levels (novice، non-elite and elite) in 10 team and individual sports، selected by random sampling and then completed the questionnaire. For this purpose، the first using a translation - back translation method، content and face validity of Persian version of questionnaire were confirmed by 3 sport psychologists and 3 English teaching specialists. Confirmatory factor analysis (CFA) based on structural equations was used for validation of structure of questionnaire، Cronbach alpha coefficient was used for validation of internal consistency of questionnaire، and intra-class correlation coefficient under test-retest method with 2-week interval was used to study temporal reliability. The results showed that the first model of sports perfectionism scale was not support the favorable fit and thus does not confirm the validity of the first measurement model (42 questions). But after eliminating the three questions، the second model with 39 questions، had acceptable fit index (RMSEA = 0. 06، CFI = 0. 91، TLI = 0. 90)، internal consistency، and temporal reliability، indicating good validity and reliability of modified Persian version of sport perfectionism scale. Therefore، The Persian version of the modified sport perfectionism-2 scale can be characterized as a tool to study and evaluate the personality traits of Iranian athletes will benefit.