Andrew Christensen, PhD, is Distinguished Research Professor of Psychology at the University of California, Los Angeles. Dr. Christensen has spent more than 30 years studying intimate relationships and working with couples in therapy. He has conducted extensive research on the impact of couple therapy, including the approach on which this book is based, which he developed with the late Neil S. Jacobson. Dr. Christensen and his wife, who live in Los Angeles, have two grown children.

Brian D. Doss, PhD, is Associate Professor of Psychology at the University of Miami, where he teaches and conducts research on couple therapy and romantic relationships. Dr. Doss lives in Miami with his wife and two children.

Neil S. Jacobson, PhD, was Professor of Psychology at the University of Washington until his death in 1999. The author or editor of numerous publications, Dr. Jacobson was one of the world's most widely cited family therapists.