title: Psychometric properties of the Intolerance of Uncertainty Scale (IUS) in a Chinese-speaking population.
abstract: BACKGROUND
  Studies have shown that the intolerance of uncertainty may play a key role in the aetiology and maintenance of worry and generalized anxiety disorder.
  
  
  OBJECTIVE
  This study investigated the psychometric properties of the Chinese version of Intolerance of Uncertainty Scale (IUS), which had already been validated in French and English versions.
  
  
  METHODS
  In a large college student sample (N = 940), the factor analysis and regression analyses were performed on the IUS.
  
  
  RESULTS
  The IUS had excellent internal consistency (α = 0.90) and good test-retest reliability (r = 0.75) over a 5-week period. Factor analysis showed that the IUS had a four-factor solution. Finally, the regression analysis demonstrated that IU contributed significantly to worry, after controlling for demographic variables and levels of anxiety and depression.
  
  
  CONCLUSIONS
  The Chinese version of the IUS was a sound scale for assessing IU and the intolerance of uncertainty was an important influencing factor on worry.
authors.affiliation: Department of Psychology, Beijing Forestry University, Beijing, China. zhihuiyang2008@126.com
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Yang
mesh_terms: D000293:Adolescent; D001008:Anxiety Disorders / Q000175:diagnosis* / Q000208:ethnology* / Q000523:psychology; D002681:China; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics / Q000706:statistics & numerical data*; D012016:Reference Values; D015203:Reproducibility of Results; D013334:Students / Q000523:psychology; D011795:Surveys and Questionnaires; D014175:Translating; D035501:Uncertainty; D055815:Young Adult