Validation of the French Versions of the Flourish Index and the Secure Flourish Index

Individual well-being is generally thought of from the perspective of the risk factors which might compromise it. Assuming that positive dimensions of well-being are also worth considering, VanderWeele and Wȩziak-Białowolska et al. developed and tested the Flourish Index (FI) and the Secure Flourish Index (SFI). These 10- and 12-item questionnaires, respectively, measure 5 and 6 dimensions of human flourishing. This article presents the translation of these indexes into French (as FI–F and SFI–F) and the assessment of their psychometric properties on a sample of 2,376 French-speaking respondents. The validity and reliability indicators used by Wȩziak-Białowolska et al. were calculated for our French indexes and found to be very close to theirs. Item groupings were confirmed using correlation and factor analyses. The hierarchical structure of both French indexes matched the English indexes’ second-order and bi-factor model analyses. Reliability and construct validity were good. The brief time required to complete the FI–F or SFI–F and their excellent psychometric properties make them very promising tools for research on the general well-being of Francophone populations