Measuring Intolerance of Uncertainty After Acquired Brain Injury: Factor Structure, Reliability, and Validity of the Intolerance of Uncertainty Scale–12

• DOI: 10.1177/10731911231182693
• Publication Date: 2023-06-26T09:57:42Z
• Authors: Andrea Kusec; Fionnuala C. Murphy; Polly V. Peers; Tom Manly
• Keywords: Validity

Intolerance of uncertainty (IU) is a risk factor for poor mental health. Acquired brain injury (ABI; example, stroke, traumatic injury) often brings considerable and increased mood disorder vulnerability. The Uncertainty Scale–Short Form (IUS-12) brief, well-validated IU measure in non-ABI samples, comprising two subscales, namely, Prospective Anxiety Inhibitory Anxiety. Here, the first time, we investigated its reliability validity ( N = 118), structure 176), ABI. Both subscales had high test–retest (intraclass correlation coefficients [ICCs] .75 .86) were significantly associated with symptoms. two-factor model was superior to one-factor fit. Some fit statistics less than optimal (standardized root mean square residual [SRMR] 0.06, error approximation [RMSEA] 0.09); hence, exploration other structures ABI samples may be warranted. Nonetheless, IUS-12 appears suitable