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 aim of the current study was to culturally adapt and validate the IUS-12 in a Mexican population.

Method:

The aim of the current study was to culturally adapt and validate the IUS-12 in a Mexican population.

Result:

Confirmatory factor analyses supported a bifactor model and a 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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