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. Kristen K. Ellard, Ph.D. is a Clinical Fellow, Massachusetts General Hospital / Harvard Medical School. Christopher P. Fairholme, Ph.D. completed his training in clinical psychology at Boston University and is a Post-Doctoral Research Fellow at Stanford University. 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. 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.