Measuring thriving across nations: Measurement equivalence of the Comprehensive Inventory of Thriving (CIT) and the Brief Inventory of Thriving (BIT)
Wiese, C. W., Tay, L., Su, R., & Diener, E. (in press). Measuring thriving across nations: Measurement equivalence of the Comprehensive Inventory of Thriving (CIT) and the Brief Inventory of Thriving (BIT). Applied Psychology: Health and Well-Being.
Positive psychological health is a multifaceted construct and fundamental to individual’s overall mental health. Yet, measures of positive psychological health tend to focus on only a few of these facets. Su, Tay, and Diener (2014) sought to address this by creating the Comprehensive and Brief Inventories of Thriving (CIT/BIT), integrative measures of wellbeing that assess positive psychological health broadly. Given growing interest in cross-national comparisons in positive psychological health, the present study expands on this work by examining the measurement invariance of these two measures across 10 countries (N = 3,077). Single group confirmatory factor analysis supported the original 18-factor structure of the CIT when compared to alternative models (single factor, 7 factor, bi-factor model) in 7 of the 10 countries and the single factor structure of the BIT across all countries. Results from the measurement invariance analysis indicated partial scalar invariance for the remaining seven countries on the CIT as well as partial scalar invariance across all countries for the BIT.
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