Intolerance of Uncertainty Scale (IUS-12)

The IUS-12 is a 12-item self-report measure of intolerance of uncertainty, a cognitive vulnerability factor underlying anxiety across multiple disorders. Developed by Carleton, Norton, and Asmundson in 2007 as short form of the original IUS-27, it measures difficulty accepting or managing uncertainty and associated anxiety. Intolerance of uncertainty is recognized as transdiagnostic cognitive characteristic linked to generalized anxiety disorder, social anxiety, panic, and obsessive-compulsive pathology.