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.