Mario Mikulincer, PhD, is a professor of psychology and dean of the New School of Psychology at the Interdisciplinary Center in Herzliya, Israel. He has published five books and more than 28 scholarly journal articles and book chapters. Dr. Mikulincer's main research interests are attachment theory, terror management theory, personality processes in interpersonal relationships, coping with stress and trauma, grief-related processes, and prosocial motives and behavior. He is a member of the editorial boards of several scientific journals, including the Journal of Personality and Social Psychology, Psychological Inquiry, and Personality and Social Psychology Review, and he has served as associate editor of two journals, the Journal of Personality and Social Psychology and Personal Relationships. Recently, he was elected to serve as chief editor of the Journal of Social and Personal Relationships. He received the EMET Prize in Social Science for his contributions to psychology and the Berscheid-Hatfield Award for Distinguished Mid-Career Achievement from the International Association for Relationship Research.   Phillip R. Shaver, PhD, a social and personality psychologist, is Distinguished Professor of Psychology at the University of California, Davis. Before moving there, he served on the faculties of Columbia University, New York University, University of Denver, and State University of New York at Buffalo. He has coauthored and coedited numerous books and has published more than 25 scholarly articles and book chapters. Dr. Shaver's research focuses on attachment, human motivation and emotion, close relationships, personality development, and the effects of meditation on behavior and the brain. He is a member of the editorial boards of Attachment and Human Development, Personal Relationships, the Journal of Personality and Social Psychology, and Emotion, and he has served on grant review panels for the National Institutes of Health and the National Science Foundation. He has been executive officer of the Society of Experimental Social Psychology (SESP) and president of the International Association for Relationship Research (IARR). He has received a Distinguished Career Award and a Mentoring Award from the IARR, a Scientific Influence Award from SESP, and a Career Contribution award from the Society for Personality and Social Psychology.