Objective: To examine the validity and reliability of the Intolerance of Uncertainty Scale-Short form in Chinese university students. Methods: 1018 university students were assessed with IUS-12, SAS, SDS, PSWQ and IUS-27. Of these students, 229 were re-tested after five weeks. Results: The item analysis indicated good homogeneity and discrimination of the items; The Cronbach's alpha coefficients for the whole inventory and the factors were ranged 0.704 to 0.878, and the test-retest reliability were ranged from 0.695 to 0.78 over 5-week period; The correlation coefficients between each item and the whole inventory were ranged from 0.427 to 0.698; The exploratory factor analysis showed that IUS-12 consisted of two factors, namely anticipatory anxiety and debilitating anxiety; The fit indices of the two-factor structure of the revised scale were good; Finally, the regression analysis showed that the IU significantly predicted the variance of worry, after controlling for demographic variables, anxiety and depression. Conclusion: The Chinese version of IUS-12 has adequate psychometric quality, which can be used to assess intolerance of uncertainty in Chinese university students.
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