ARTHUR E. JONGSMA, JR., PHD, is the Series Editor for the bestselling PracticePlanners^(R). Since 1971, he has provided professional mental health services to both inpatient and outpatient clients. He was the founder and director of Psychological Consultants, a group private practice in Grand Rapids, Michigan, for 25 years. He is the author or coauthor of over 50 books on treatment planning and has conducted training workshops for mental health professionals around the world.

K. DANIEL O'LEARY, PHD, is a Distinguished Professor of Clinical Psychology in the Department of Psychology at Stony Brook University, State University of New York. His current research focuses on physical and psychological aggression in intimate relations and factors in marriage that lead to clinical depression.

RICHARD E. HEYMAN, PHD, is a Research Professor of Clinical Psychology in the Department of Psychology at Stony Brook University, State University of New York. Dr. Heyman's research program focuses on the development and maintenance of family problems.