John C. Norcross, PhD, is Professor and former Chair of Psychology at the University of Scranton. John W. Santrock, PhD, is Professor and former Chair of Psychology at the University of Texas at Dallas. Linda F. Campbell, PhD, is Associate Professor and director of the training clinic in the Department of Counseling and Human Development at the University of Georgia. Thomas P. Smith, PsyD, is a licensed psychologist in the Counseling Center at the University of Scranton. Robert Sommer, PhD, is Professor and former Chair of Psychology at the University of California, Davis. Edward L. Zuckerman, PhD, a clinical psychologist, teacher, and author, is Editor of the Clinician's Toolbox series.