Jack A. Apsche, EdD, ABPP is a member of the forensic faculty at Walden University and former consultant of clinical services at North Spring Behavioral Healthcare. He is founder of the Apsche Center at North Spring in Leesburg, VA. He also serves as editor-in-chief of the International Journal of Behavioral Consultation and Therapy and is associate editor of Behavior Analyst Today. He developed, implemented, and tested mode deactivation therapy, which expands on cognitive behavioral therapy and is focused on conceptualizing and treating adolescents. Lucia R. DiMeo, PhD, is a clinical psychologist and hypnotherapist. She has a special interest in mind/body therapeutic modalities. She is associate professor of psychology at the University of the Virgin Islands. Foreword writer Robert J. Kohlenberg, PhD, ABPP, is professor of psychology at the University of Washington. He is cocreator of functional analytic psychotherapy (FAP), a behavior analytic approach to understanding the mechanism of action that operates in curative therapist-client relationships.