Robert Plutchik is professor emeritus at the Albert Einstein College of Medicine and adjunct professor at the University of South Florida. He received his Ph.D. from Columbia University. He has authored or coauthored more than 260 articles, 45 chapters and eight books and has edited seven books. His research interests include the study of emotions, the study of suicide and violence and the study of the psychotherapy process. Address for Plutchik: 4505 Deer Creek Boulevard, Sarasota, FL 34238. Internet: proban@home.com