David F. Tolin, Ph.D. is the founder and Director of the Anxiety Disorders Center at The Institute of Living, in Hartford, Connecticut. A leading authority on compulsive disorders, he has been interviewed for The New York Times and the Associated Press, and has been a recurrent guest on The Today Show, Good Morning America, and The Oprah Winfrey Show. Randy O. Frost, Ph.D. is the Harold Edward and Elsa Siipola Israel Professor of Psychology at Smith College. He is co-editor of the Obsessive Compulsive Foundation (OCF) website on hoarding. The leading authority on compulsive hoarding, he has been interviewed for The New York Times, Newsweek, and National Public Radio, and has appeared on ABC 20/20 Downtown, Good Morning America, and Dateline. Gail Steketee, Ph.D. is Professor at the Boston University School of Social Work. Her recent research, funded by the National Institute of Mental Health, focuses on diagnostic and personality aspects of compulsive hoarding and on effective treatments. She and Dr. Frost have written the manual for mental health clinicians who treat hoarding problems.