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A comparison of the 27-item and 12-item intolerance of uncertainty scales

Khawaja, Nigar G. & Yu, Lai Ngo Heidi (2010) A comparison of the 27-item and 12-item intolerance of uncertainty scales. Clinical Psychologist, 14(3), pp. 97-106.

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Abstract

The 27-item Intolerance of Uncertainty Scale (IUS) has become one of the most frequently used measure 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.

Impact and interest:

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16 citations in Web of Science®

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ID Code: 40309
Item Type: Journal Article
Keywords: Intolerance of Uncertainty, Anxiety and Worry
DOI: 10.1080/13284207.2010.502542
ISSN: 1328-4207
Subjects: Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > PSYCHOLOGY (170100) > Health Clinical and Counselling Psychology (170106)
Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > PSYCHOLOGY (170100) > Personality Abilities and Assessment (170109)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Copyright Owner: Copyright 2010 The Australian Psychological Society Ltd
Copyright Statement: This is an electronic version of an article published in Clinical Psychologist, 14(3), pp.97-106. Clinical Psychologist is available online at informaworld.
Deposited On: 25 Feb 2011 07:26
Last Modified: 01 Mar 2012 00:24

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