Psychometric properties of the Mexican version of the Intolerance of Uncertainty Scale: The IUS-12M

  • Alejandrina Hernández-Posadas Faculty of Higher Studies Iztacala, National Autonomous University of Mexico, Mexico; Faculty of Behavioural and Social Sciences, University of Groningen, Groningen, Netherlands
  • Anabel De la Rosa-Gómez Faculty of Higher Studies Iztacala, National Autonomous University of Mexico, Mexico
  • Miriam J. J. Lommen Faculty of Behavioural and Social Sciences, University of Groningen, Netherlands
  • Theo K. Bouman Faculty of Behavioural and Social Sciences, University of Groningen, Groningen, Netherlands
  • Juan M. Mancilla-Díaz Faculty of Higher Studies Iztacala, National Autonomous University of Mexico, Mexico
  • Adriana Del Palacio González Center for Alcohol and Drug Research, Aarhus University, Denmark
Keywords: psychometric properties, intolerance of uncertainty, confirmatory factor analysis, Mexico, reliability


Background: The Intolerance of Uncertainty Scale short version (IUS-12) has proven to be a robust self-report measure to assess intolerance of uncertainty. While previous psychometric analyses of the IUS-12 have established a stable two-factor structure corresponding to the prospective and inhibitory factors of intolerance of uncertainty, recent studies suggest that the bifactor model may better explain its factor structure. Objective: The current study aimed to adapt and validate the IUS-12 in a Mexican population culturally. Method: The study consisted of a convenience non-probabilistic community sample of 405 adults between 18 and 70 years. Results: Confirmatory factor analyses supported a bifactor model and good internal consistency. Invariance testing indicated partial invariance across women and men. Convergent validity tests showed that the IUS-12 was related to measures of worry, as well as depression and anxiety. Conclusion: These findings provide evidence for the reliability and validity of the adapted version of the IUS-12 in Mexico.


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How to Cite
Hernández-Posadas, A., De la Rosa-Gómez, A., Lommen, M., Bouman, T., Mancilla-Díaz, J., & Del Palacio González, A. (2023). Psychometric properties of the Mexican version of the Intolerance of Uncertainty Scale: The IUS-12M. Interacciones, 9, e358.
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