ARTHUR E. JONGSMA, Jr., PhD, is Series Editor for the bestselling PracticePlanners®. Since 1971, he has provided professional mental health services to both inpatient and outpatient clients. He managed a group private practice for twenty-five years and now is the Executive Director of Life Guidance Services in Grand Rapids, Michigan.

L. Mark Peterson, ACSW, is Program Manager for Bethany Christian Services' Residential Treatment and Family Counseling programs in Grand Rapids, Michigan. He is coauthor of several of the bestselling PracticePlanners®.

William P. McInnis, PsyD, is in private practice with Aspen Psychological Services in Grand Rapids, Michigan. He is also coauthor of the bestselling The Child Psychotherapy Treatment Planner, Fourth Edition and The Adolescent Psychotherapy Treatment Planner, Fourth Edition.