Psychometric properties of an Arabic translation of the Functionality Appreciation Scale (FAS) in Lebanese adults

The Functionality Appreciation Scale is a widely used instrument for the measurement of an individual's appreciation of their body for what it can do and is capable of doing (i.e., functionality appreciation). Here, we examined the psychometric properties of a novel Arabic translation of the FAS. A sample of 826 Lebanese adults completed the FAS, as well as previously validated measures of body appreciation, disordered eating attitudes, orthorexia, and self-esteem. Exploratory and confirmatory factor analyses supported a unidimensional model of FAS scores, with all 7 items retained. Scores achieved scalar invariance across gender, with women reporting significantly greater functionality appreciation than men. FAS scores were found to have adequate composite reliability and adequate patterns of convergent and criterion-related validity. Additionally, functionality appreciation predicted self-esteem once the effects of all other variables had been accounted for, supporting incremental validity. Overall, these results suggest that the Arabic FAS is a psychometrically valid tool for the assessment of functionality appreciation. The availability of the Arabic FAS should facilitate improved understanding of the effectiveness of existing interventions designed to promote greater physical activity in the Lebanese context.