Cross-validation of the very short form of the Physical Self-Inventory (PSI-VS): invariance across genders, age groups, ethnicities and weight statuses |
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| Authors: | Morin Alexandre J S Maïano Christophe |
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| Affiliation: | aDepartment of Psychology, University of Sherbrooke, Sherbrooke, Québec, Canada;bEducational Excellence and Equity (E3) Research Program, Centre for Educational Research (University of Western Sydney), Sydney, Australia;cInstitute of Movement Sciences Etienne-Jules Marey (UMR 6233), CNRS-University of Aix-Marseille II, Marseille, France |
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| Abstract: | In a recent review of various physical self-concept instruments, Marsh and Cheng (in press) noted that the very short 12-item version of the French Physical Self-Inventory (PSI-VS) represents an important contribution to applied research but that further research was needed to investigate the robustness of its psychometric properties in new and diversified samples. The present study was designed to answer these questions based on a sample of 1103 normally achieving French adolescents. The results show that the PSI-VS measurement model is quite robust and fully invariant across subgroups of students formed according to gender, weight, age and ethnicity. The results also confirm the convergent validity and scale score reliability of the PSI-VS subscales. |
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| Keywords: | Physical self-concept Physical Self-Inventory Very short form Confirmatory factor analysis Convergent validity Reliability Measurement invariance |
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