Richard P. Swinson, MD, is professor emeritus and past chair of the department of psychiatry and behavioural neurosciences at McMaster University in Hamilton, ON, Canada. Previously, he was medical director of the Anxiety Treatment and Research Clinic, and psychiatrist-in-chief at St. Joseph’s Healthcare Hamilton. He is a fellow of the Royal College of Physicians and Surgeons of Canada, and the Royal College of Psychiatrists in the UK. He was awarded an inaugural Distinguished Fellowship of the Canadian Psychiatric Association in 2006, and Distinguished Life Fellow of the American Psychiatric Association in 2017. His research interests lie in the theory, assessment, and treatment of anxiety disorders, particularly OCD and social anxiety disorder (SAD). He has published more than 200 peer-reviewed papers, thirty book chapters, and ten books. Swinson has held numerous research grants since 1966, and has been an invited speaker at many conferences around the world on anxiety disorders and substance use disorders. He also chaired the steering committee for the Canadian Anxiety Treatment Guidelines Initiative, leading to the publication of Canadian Clinical Practice Guidelines for the Management of Anxiety Disorders in 2006.