ArticlePloS one2026
Validation and utility of the French version of the Unified Multidimensional Calling Scale (UMCS-22) for stipended volunteer firefighters.
Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study evaluated the psychometric properties of the French version of the Unified Multidimensional Calling Scale (UMCS-22), adapted for use with volunteer firefighters, including reliability, construct and criterion validity. Data were collected electronically via LimeSurvey (N = 1,149) and analysed using Jamovi 2.3.3. The measurement model of the French UMCS-22, examined globally and with respect to measurement invariance across gender and age groups, exhibited strict invariance. Internal consistency coefficients ω-McDonald of the dimensional scores of the French UMCS-22 fell between.75 and.86; while its global score had ω = .96. The evaluation of criterion validity through Bayesian linear regression and Structural equation modelling demonstrated differential functioning of the French UMCS-22 facets. Specifically, transcendent summons and pervasiveness were associated with the negative outcomes and purposefulness did not predict any outcome. The utility of the French UMCS-22 adapted for stipended volunteer firefighters is discussed with regard to the neoclassical and modern approaches as well as with regard to the double-edged sword nature of calling.
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