David H. Barlow, Ph.D. is a Professor of Psychology and Psychiatry, Founder and Director Emeritus of the Center for Anxiety and Related Disorders at Boston University. He is the editor for the Treatments That Work series of therapist manuals and patient workbooks, as well as the editor of The Oxford Handbook of Clinical Psychology. Todd J. Farchione, Ph.D. is a Research Assistant Professor in the Department of Psychology, and Center for Anxiety and Related Disorders at Boston University. Christopher P. Fairholme, Ph.D. completed his training in clinical psychology at Boston University and is a Post-Doctoral Research Fellow at Stanford University. Kristen K. Ellard, Ph.D. is a Clinical Fellow, Massachusetts General Hospital / Harvard Medical School Christina L. Boisseau, Ph.D. is an Assistant Professor (Research) at Brown Medical School in the Department of Psychiatry and Human Behavior. Laura B. Allen, Ph.D. (now Laura A. Payne) is currently a Clinical Instructor in Pediatrics at the David Geffen School of Medicine at UCLA. Jill Ehrenreich-May, Ph.D. is an Associate Professor and Director, Child and Adolescent Mood and Anxiety Treatment Program, University of Miami.