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Barrado-Moreno, Victoria Esteve-Zarazaga, Rosa López-Martínez, Alicia Eva Ramírez-Maestre, María del Carmen 2025-01-27T09:01:13Z 2025-01-27T09:01:13Z 2025 Barrado-Moreno, V., Esteve, R., López-Martínez, A.E. et al. Measuring psychological flexibility and inflexibility: further psychometric evidence of the Multidimensional Psychological Flexibility Inventory short form (MPFI-24) in Spanish population. Curr Psychol (2025). https://doi.org/10.1007/s12144-025-07421-x https://hdl.handle.net/10630/37024 10.1007/s12144-025-07421-x The Multidimensional Psychological Flexibility Inventory (MPFI) is a recently developed measure of psychological flexibility and inflexibility (PF and PI) based on the Hexaflex/Inflexahex Model. The aim of this article was to assess the factorial structure, reliability, and convergent and criterion validity of the MPFI-24 in a sample from Spain. The MPFI-24 was tested in a sample of 508 university students (Study 1). Items comprising the acceptance and Experiential Avoidance (EA) subscales were rewritten and tested in a sample of 406 university students (Study 2). Participants completed online cross-sectional surveys including the Spanish MPFI-24, and measures of PF, PI, and mental health. Confirmatory factor analysis showed a six-component first-order factor structure for PF and for PI. The MPFI-24 demonstrated acceptable internal consistency, temporal stability, and convergent and criterion validity. The MPFI-24 is a promising tool. Potential areas for improvement of the measure are discussed. eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Tests psicológicos Psicología - Metodología Measuring psychological flexibility and inflexibility: further psychometric evidence of the Multidimensional Psychological Flexibility Inventory short form (MPFI-24) in Spanish population journal article