Social Phobia Inventory (SPIN) is a questionnaire developed by the department of Psychiatry and Behavioral Sciences of Duke University[1] for screening and measuring severity of social anxiety disorder.
This self-reported assessment scale consists of 17 items, which cover the main spectrum of social phobia such as fear, avoidance, and physiological symptoms.
Each statement of SPIN can be measured by a choice of five answers based on a scale of intensity of social phobia signs ranging from "Not at all" to "Extremely".
The SPIN is considered as a valid assessment scale for screening social anxiety disorder as well as measuring of social phobia severity and outcome following treatment.
A shortened version entitled mini-SPIN with only 3 questions has been found to accurately identify 90% of people diagnosed with generalized social anxiety disorder.