The Intolerance of Uncertainty Scale – Short Form (IUS-12)

This questionnaire measures responses to uncertain and ambiguous situations (Carleton et al., 2007) via 12 items that participants rate on a 5-point scale ranging from 1 (not at all characteristic of me) to 5 (entirely characteristic of me). Scores range between 12 and 105. We used a translated IUS-12 Hebrew version (Zerach and Levi-Belz, 2019). For the Arabic version, we translated and validated the questionnaire using inter-judge reliability, based on Siny et al. (2017). In the current sample, Cronbach’s alpha for the IUS-12 was 0.87.