Paul Ekman was a Professor of Psychology for 32 years in the Department of Psychiatry at the University of California at San Francisco. He also served as chief psychologist in the U.S. Army, Fort Dix New Jersey from 1958-1960. His interests have focused on two separate, but related topics: He originally focused on nonverbal behavior, and by the mid-60s concentrated on the expression and physiology of emotion. His other interest is interpersonal deception. His research program was supported by grants from the National Institute of Mental Health, the National Science Foundation, and the Advanced Research Projects Agency of the DOD, loosely affiliated with UCSF. His many honors have included the Distinguished Scientific Contribution Award of the American Psychological Association in 1991, and an honorary doctor of humane letters from the University of Chicago in 1994. Dr. Ekman retired from UCSF in 2004. He currently serves as the chairman of the board of the Institute of Analytic Interviewing and continues to consult on research and training related to emotion and deception. Erika Rosenberg is an emotions researcher, a health psychologist, and an expert in facial expression measurement. Dr. Rosenberg currently consults with a variety of academic and non-academic clients on issues related to facial behavior, teaches workshops in FACS and emotional communication, and is a Lecturer in the Department of Psychology at the University of California, Davis.