McCullough (Ph.D., Virginia Commonwealth University) is associate professor of psychology at the University of Miami in Coral Gables, Florida. Formerly, he was director of research for the National Institute for HealthCare Research (NIHR) in Rockville, Maryland. Everett L. Worthington Jr. (Ph.D., University of Missouri) is professor of psychology at Virginia Commonwealth University. He is a licensed clinical psychologist and former executive director of the Templeton Foundation's A Campaign for Forgiveness Research. Worthington has studied forgiveness since the 1980s and has published more than two hundred articles and papers on forgiveness, marriage and family, psychotherapy and virtue in a wide variety of journals and magazines. He was the founding editor of Marriage and Family: A Christian Journal and sits on the editorial boards of several professional journals. He has appeared on Good Morning America, CNN and The 700 Club and been featured in award-winning documentary movies on forgiveness such as The Power of Forgiveness and The Big Question. He is the author of seventeen books including Handbook of Forgiveness, Hope-Focused Marriage Counseling and Forgiving and Reconciling.