Abstract

ORNELAS, M et al. Composition and factorial invariance of the Short Version of the Physical Self Description Questionnaire among Mexican adolescents. CPD [online]. 2020, vol.20, n.2, pp.229-242.  Epub July 13, 2020. ISSN 1989-5879.

The aim of this research was to analyze the psychometric properties proposed by Marsh et al. (2010) for the Physical Self Description Questionnaire (PSDQ-S). The total sample has been composed by 915 Mexican adolescents, 400 athletes and 515 non-athletes, with ages from 11 to 15 years (M = 12.31, SD = 1.43). The factor structure of questionnaire has been analized through the confirmatory factor analysis. This analysis shows that a nine factors structure is viable and adequate for the total sample (GFI .964; RMSEA .030; CFI .981) and the populations of athletes (GFI .921; RMSEA .049; CFI .946) and non-athletes (GFI .943 y RMSEA .049; CFI .970). The nine factors structure (physical activity, appearance, body fat, coordination, endurance, flexibility, health, sport competence, and strength), according to statistical and substantive criteria, has shown adequate indicators of reliability and validity adjustment. On the other hand, the factorial structure, the factorial loads and the intercepts are considered invariant according to the variable sports practice; however, there are differences between athletes and non-athletes in favor of athletes in terms of their physical self-concept: physical activity (-1,243, p <0.001), body fat (-0.212, p <0.05), coordination (-0.765, p <0.001), endurance (-0.882, p <0.001), flexibility (-0.427, p <0.001), health (-0.172, p <0.05), sports competition (-1.026, p <0.001) and strength (-0.614, p <0.001). In conclusion, the PSDQ-S can be a useful tool to advance in the study of the factors that affect the physical self-concept.

Keywords : Validity; Reliability; Psychometics; Psychological assessment; Physical self-concept.

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