Michael E. McCullough, PhD, is Director of Research at the National Institute for Healthcare Research in Rockville, Maryland. The author or coauthor of two previous books, Dr. McCullough investigates forgiveness, the association of religion and spirituality with physical and mental health, and the influence of religion and spirituality on counseling, psychotherapy, and care at the end of life.

Kenneth I. Pargament, PhD, is Professor of Psychology at Bowling Green State University, where he is also Director of Clinical Training of the clinical psychology PhD program. He has published extensively in the psychology of religion, stress, and coping, and is the author of The Psychology of Religion and Coping.

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• All titles by Kenneth I. Pargament

Carl E. Thoresen, PhD, is Professor of Education, Psychology, and Psychiatry/Behavioral Sciences at Stanford University. His research interests involve assessment and management of the Type A behavior pattern, greater methodological diversity in behavioral health/medicine research, and the role of spiritual and religious factors in health, broadly defined. He is the author of 7 books and over 150 articles and book chapters.