Susan M. Pollak, MTS, EdD, is cofounder and senior teacher at the Center for Mindfulness and Compassion at Harvard Medical School/Cambridge Health Alliance, where she has supervised and taught since the mid-1990s. She is past president of the Institute for Meditation and Psychotherapy and a psychologist in private practice in Cambridge, Massachusetts. A longtime student of meditation and yoga, Dr. Pollak teaches about mindfulness, compassion, and self-compassion in psychotherapy and has been integrating the practices of meditation into psychotherapy since the 1980s. She is author of Self-Compassion for Parents (for general readers) and coauthor of Sitting Together: Essential Skills for Mindfulness-Based Psychotherapy (for mental health professionals).

Thomas Pedulla, LICSW, is a clinical social worker and psychotherapist in private practice in Arlington, Massachusetts, where he works with individuals and leads mindfulness-based cognitive therapy groups. A faculty and board member at the Institute for Meditation and Psychotherapy since 2007, Mr. Pedulla has also served on the board of the Cambridge Insight Meditation Center and has been a practitioner of meditation in the vipassana tradition since the 1980s.

Ronald D. Siegel, PsyD, is Assistant Professor of Psychology, part time, at Harvard Medical School/Cambridge Health Alliance, where he has taught since the early 1980s. He is a longtime student of mindfulness meditation and is a faculty and board member at the Institute for Meditation and Psychotherapy. Dr. Siegel teaches internationally about the application of mindfulness practices in psychotherapy and other fields, and maintains a private practice in Lincoln, Massachusetts. His books include The Mindfulness Solution, for general readers, as well as several acclaimed works for professionals.