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ERIC Number: EJ904118
Record Type: Journal
Publication Date: 2010-Nov
Pages: 10
Abstractor: As Provided
Reference Count: 18
ISSN: ISSN-1328-4207
A Comparison of the 27-Item and 12-Item Intolerance of Uncertainty Scales
Khawaja, Nigar G.; Yu, Lai Ngo Heidi
Clinical Psychologist, v14 n3 p97-106 Nov 2010
The 27-item Intolerance of Uncertainty Scale (IUS) has become one of the most frequently used measures of Intolerance of Uncertainty. More recently, an abridged, 12-item version of the IUS has been developed. The current research used clinical (n = 50) and non-clinical (n = 56) samples to examine and compare the psychometric properties of both versions of the IUS. The two scales showed good internal consistency at both the total and subscale level and had satisfactory test-retest reliability. Both versions were correlated with worry and trait anxiety and had satisfactory concurrent validity. Significant differences between the scores of the clinical and non-clinical sample supported discriminant validity. Predictive validity was also supported for the two scales. Total scores, in the case of the clinical sample, and a subscale, in the case of the non-clinical sample, significantly predicted pathological worry and trait anxiety. Overall, the clinicians and researchers can use either version of the IUS with confidence, due to their sound psychometric properties. (Contains 4 tables.)
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: State Trait Anxiety Inventory