Vancouver Obsessional Compulsive Inventory (VOCI)

The Vancouver Obsessional Compulsive Inventory (VOCI) is a 55-item self-report questionnaire designed to assess the frequency and distress associated with obsessive-compulsive symptoms across multiple domains. Developed by Thordarson and colleagues in 2004, the VOCI measures six subscales: Contamination Obsessions, Checking Compulsions, Obsessions, Hoarding, Just Right Compulsions, and Doubt/Responsibility. It is a comprehensive tool for assessing the full spectrum of OCD presentations and monitoring treatment response.