Factor structure and measurement invariance of the Subjective Vitality Scale: evidence from Chinese adolescents in Hong Kong
This study translates the Subjective Vitality Scale (SVS) into Chinese and examines its factor structure and measurement invariance in a sample of Chinese adolescents in Hong Kong.
Chinese adolescents in Hong Kong were invited to participate in the study. Four models of the SVS (a 7-item model, two 6-item models and a 5-item model) were compared using confirmatory factor analysis (CFA). The internal consistency reliability was evaluated using Cronbach’s alpha coefficients, and the criterion validity was assessed using bivariate correlations between subjective vitality and positive and negative affect. Finally, measurement invariance across genders and time points was examined to evaluate the invariance of the SVS model.
The results of the CFA analysis indicated that the 5-item measurement model fit the data better than the other three models. The Cronbach’s alpha was above 0.70 (0.92), revealing excellent internal consistency reliability, and the SVS was significantly associated with positive affect and negatively associated with negative affect, indicating criterion validity. Finally, the measurement invariance analysis of the 5-item model displayed strict invariance across genders and time points.
The results support the 5-item measurement model of the Chinese version of the SVS. This model has excellent internal consistency reliability, supports the criterion validity of the instrument and demonstrates strict invariance across genders and time points. In summary, the findings suggest that the 5-item Chinese version of the SVS is a reliable and valid instrument for assessing the subjective vitality of Chinese adolescents in Hong Kong.
KeywordsSubjective vitality Factor structure Measurement invariance Chinese adolescents Validity Reliability
The authors would like to thank all students and their parents who gave their consent to participate in this study. Special thanks go to all physical education teachers and school principals who allow us to access to students in their classes and schools. Special thanks also go to the research assistants who helped to collect data for this study.
This study was supported by the General Research Fund, Research Grant Council, Hong Kong SAR, China (No. 12401814).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
The study was approved by Committee on the Use of Human and Animal Subjects in Teaching and Research, Hong Kong Baptist University. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants and their parents who participated in the study.
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