Anxiety Sensitivity Index–3 (ASI-3)

The Anxiety Sensitivity Index–3 (ASI-3) is an 18-item self-report questionnaire that measures anxiety sensitivity—the tendency to fear bodily sensations and interpret them as signs of impending threat. Developed by Taylor and colleagues in 2007, it distinguishes between three domains of anxiety sensitivity: physical, cognitive, and social. The ASI-3 is widely used in research and clinical assessment to identify individuals at risk for anxiety disorders, panic disorder, and post-traumatic stress.