Karen J. Landsman, PhD, is a psychologist specializing in the cognitive-behavioral treatment of children, adults, and families with obsessive-compulsive disorder and other anxiety disorders. She is currently in private clinical practice in Westfield and Chatham, NJ. Previously, she specialized at The Anxiety and Agoraphobia Treatment Center in Philadelphia, Pennsylvania. She received her PhD in clinical psychology from the University of Maryland at College Park and completed her pre-doctoral internship and post-doctoral fellowship at the University of Maryland School of Medicine in Baltimore, MD. Cherry Pedrick, RN, is a freelance writer with over twenty year's experience as a nurse who is dedicated to helping people make positive changes in their physical, mental and spiritual lives. In 1994 she was diagnosed with obsessive-compulsive disorder, which began an intensive search for knowledge, effective treatment, and management of OCD. She has coauthored many books for people with obsessive-compulsive spectrum disorders, including the first edition of The OCD Workbook, The Habit Control Workbook, The BDD Workbook, and Helping Your Child with OCD. She lives in North Las Vegas, NV. You can read many of her articles and learn more about her books at www.cherrypedrick.com.