Abstract
THE TURKISH SHORT VERSION OF THE INTOLERANCE OF UNCERTAINTY (IUS-12) SCALE: THE STUDY OF VALIDITY AND RELIABILITY
The aim of this research is to adapt the Short Version of the Intolerance of Uncertainty Scale (IUS-12) (Carleton, Norton, & Asmundson, 2007) to Turkish and to examine its psychometric properties. The research was conducted on total 593 (201 ¬+ 392) university students in two mid-state universities. The validity and reliability of scale was investigated by test re-test, Cronbach alpha, exploratory and confirmatory factor analysis and criterion related validity methods Coping Flexibility Scale and Educational Stress Scale were used for the criterion related validity. Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy of .85 and a significant result on Bartlett’s test of Sphericity χ2= 5052,53 (p< .001, df= 66). Results confirmatory factor analyses demonstrated that 12 items yielded two factor as original form and that the two-dimensional model was well fit (χ²= 147.20, df= 48, RMSEA=.073, CFI=.95, IFI=.95, GFI=.94, and SRMR=.046). Factor loadings ranged from .55 to .87. Cronbach alpha internal consistency coefficient was found as .88 for overall scale, 84 for prospective anxiety subscale and .77 for inhibitory anxiety subscale. In the concurrent validity significant relationships were found between the Intolerance of Uncertainty Scale (IUS-12) and Coping Flexibility Scale, Educational Stress Scale (r= -.43, .41 respectively). Test-retest reliability coefficient was .74. Corrected item-total correlations ranged from .42 to .68. Overall results demonstrated that the Short Version of the Intolerance of Uncertainty Scale (IUS-12) can be named as a valid and reliable instrument that could be used in the field of psychology, psychiatry and education.
Keywords
Intolerance of uncertainty, validity, reliability, factor analysis
