Investigating The Psychometric Properties of Sport Motivation Scale-II
Ali Yıldız1, Atahan Altıntaş2, Safter Elmas1, F. Hülya Aşçı1
1Faculty of Sport Sciences, Marmara University, İstanbul, Turkey
2Faculty of Health Sciences, Sport Science Department, Başkent University, Ankara, Turkey
Keywords: Sports, motivation, scale, validity, reliability
Objective: The purpose of this study was to examine the psychometric properties of Sport Motivation Scale-II (SMS-II) which was developed by Pelletier et al. for Turkish athletes.
Material and Methods: A total of 409 (Mage=21.9±4.3) athletes consisting of 168 females (Mage=21.2±3.6) and 241 males (Mage=22.4±4.7) were accepted to participate in the study. The SMS-II consists of 18 items and six subscales (intrinsic regulation, integrated regulation, identified regulation, introjected regulation, external regulation and amotivated regulation) and is responded on a seven point Likert scale. The confirmatory factor analysis (CFA) was conducted for the construct validity; for concurrent validity, the relationship between SMS-II and Sports Motivation Scale was examined; and for convergent validity, the relationship between SMS-II and Task and Ego Orientation in Sport Questionnaire, the Satisfaction with Life Scale and Subjective Vitality Scale were examined with Pearson product moment correlation. Scale’s reliability was tested with Cronbach alfa coefficient.
Results: According to the confirmatory factor analysis results, the values of goodness of fit index of scale with 18 items were (x2/sd = 4.23, IFI = 0.86, TLI = 0.79, CFI = 0.85, RMSEA = 0.09) and scale with 16 items (without items 3 and 7) were (x2/sd = 2.61, IFI = 0.94, TLI = 0.91, CFI = 0.94 and RMSEA = 0.06). Factor loadings were between 0.43 and 0.84 for the scale with 16 items. Results on the concurrent validity analysis indicated that all subscale scores of SMS-II and all subscale scores of the Sport Motivation Scale were significantly correlated (p<0.05). The results of the analysis for the convergent validity also revealed that there were significant relationships between SMS-II and other scales (p<0.05). The internal consistency figures for the 16-item model of the scale ranged from 0.44 (Introjected Regulation) to 0.75 (Identified Regulation).
Conclusion: Results indicated that the 16-item Turkish version of SMS-II can be used to determine the motivation level of Turkish athletes.
Cite this article as: Yildiz A, Altintas A, Elmas S et al. Investigating the psychometric properties of Sport Motivation Scale-II. Turk J Sports Med. 2019;54(1):33-44.