Hierarchical factor structure of the Intolerance of Uncertainty Scale short form (IUS-12) in the Italian version
Year: 2016
Type: article
Abstract: Despite widespread use, few translations are available for the Intolerance of Uncertainty Scale short \nform (IUS-12) as well as limited research on its psychometric properties in Italy. Moreover, recent evidence \nhas suggested a multifaceted hierarchical structure for this scale. We compared the two-factor \nmodel to second-order and bi-factor models, in which a General IU factor was posited with two more narrow \nfactors: Prospective IU and Inhibitory IU. Models were tested on a pooled dataset of students (N = \n609) taking the IUS-12 alone or with other IUS-27 items. The bi-factor model fitted the sample data better \nthan alternative models. The general factor accounted for 80% of the item variance. Presentation mode did \nnot impact scalar invariance. Convergent validity with neuroticism, need for closure, and the uncertainty \nresponse scale was high for the total score. As such, scoring the IUS-12 total score is recommended in \nclinical research and assessment
DOI: 10.4473/tpm23.3.8
Language: English
Field: Decision Sciences
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W3139318496