Validating a Short Version of the Intolerance of Uncertainty Scale-12 (IUS-12)

Background: This study aims to validate the short version of Intolerance Uncertainty Scale-12 (IUS-12).Methods: A comprehensive set questionnaires, including IUS-12, STAI-T, PSWQ, CES-D, and K-CSI, was administered completed by 404 participants. The average age participants 31.29 years (SD=9.18), comprising 114 men, 287 women, 3 individuals identifying with other gender. We conducted a factor analysis on collected data compared fit indices one-factor, two-factor, bifactor models. Furthermore, multiple-group confirmatory evaluated measurement invariance between men’s women’s groups. Correlational analyses were also conducted.Results: Data from show that model most appropriate, demonstrating good internal consistency. Omega coefficients explained common variance computed evaluate dimensionality validating use total score scale. Its showed sustained two gender correlation IUS-12 scales assessing attributes such as trait anxiety, worry, depression, avoidance coping strategy supported convergent validity.Conclusions: These findings suggest is reliable valid measure for intolerance uncertainty. discusses its limitations offers recommendations future research endeavors.