Roy F. Baumeister, PhD, holds the Eppes Professorship in the Department of Psychology at Florida State University. He has also taught and conducted research at the University of California at Berkeley, Case Western Reserve University, University of Texas, University of Virginia, the Max-Planck Institute in Munich (Germany), and Stanford's Center for Advanced Study. Dr. Baumeister has contributed nearly 300 professional publications (including 15 books), spanning such topics as self and identity, performance under pressure, self-control, self-esteem, finding meaning in life, sexuality, aggression and violence, suicide, interpersonal processes, social rejection, the need to belong, and human nature. His research on self-regulation has been funded for many years by the National Institute of Mental Health. Kathleen D. Vohs, PhD, is Assistant Professor in the Carlson School of Management at the University of Minnesota. She most recently held the Canada Research Chair in Marketing Science and Consumer Psychology at the University of British Columbia. Dr. Vohs has conducted research on self-regulation at the University of Utah and Case Western Reserve University under a grant from the National Institute of Mental Health. She has over 60 professional publications that focus on understanding processes related to self-regulation, self-esteem, interpersonal functioning, and bulimic symptomatology. Her research has been extended to the domains of chronic dieting, sexuality, and personal spending and savings.