He is associate editor of Journal of Cognitive Psychotherapy and currently serves on the editorial boards of the journals Behaviour Research and Therapy, Journal of Clinical Psychology, and Journal of Anxiety Disorders. He has published more than 70 journal articles and book chapters and has participated in more than 100 conference presentations. He has been a member of the Obsessive Compulsive Cognitions Workgroup since 1995 and a member of the Health Anxiety Workgroup since 2006.