Leslie S. Greenberg, PhD, is Professor of Psychology and Director of the Psychotherapy Research Center at York University in Canada. Coauthor of Facilitating Emotional Change; Emotionally Focused Therapy for Couples; and Emotion in Psychotherapy, he has coedited numerous volumes including Emotion, Psychotherapy, and Change; Empathy Reconsidered; and The Working Alliance. Past President of the International Society for Psychotherapy Research, Dr. Greenberg maintains a private practice in Toronto. Sandra C. Paivio, PhD, is Assistant Professor and Coordinator of the Psychology Services Centre in the Department of Psychology at the University of Saskatchewan in Canada. The author of several publications on emotional processes in psychotherapy, Dr. Paivio is currently conducting research on therapy with survivors of childhood trauma. She maintains a part-time private practice and is active in clinical supervision and training.