Peter J. Norton, PhD, is Professor of Psychology and Associate Head of School (Research) at the Cairnmillar Institute in Melbourne, Australia. A Fellow of the American Psychological Association (APA), Dr. Norton is an internationally recognized researcher and developer of transdiagnostic cognitive-behavioral therapy for emotional disorders. He has authored numerous research studies; has delivered many presentations and workshops for the scientific community, therapists, and the general public; and sits on the editorial boards of two scientific journals. He is a recipient of the Theodore Blau Early Career Award for Outstanding Contribution to Professional Clinical Psychology from the Society of Clinical Psychology (Division 12 of the APA), among other honors. Martin M. Antony, PhD, is Professor of Psychology at Toronto Metropolitan University in Toronto, Ontario, Canada, and Provincial Clinical and Training Lead for the Ontario Structured Psychotherapy Program. Previously, Dr. Antony was founding director of both the Anxiety Treatment and Research Clinic and the Psychology Residency Program at St. Joseph’s Healthcare Hamilton. He has published over 300 scientific articles and chapters and 33 books in areas related to cognitive-behavioral therapy and anxiety-related disorders, and has presented his work widely across four continents. A Fellow of the Royal Society of Canada, he is past president of the Canadian Psychological Association and the Association for Behavioral and Cognitive Therapies.