John T. Cacioppo is the Tiffany and Margaret Blake Distinguished Service Professor and Director of the Center for Cognitive and Social Neuroscience at the University of Chicago. He is a past President of several scientific societies, including the Association for Psychological Science, the Society for Social Neuroscience, the Society for Personality and Social Psychology, and the Society for Psychophysiological Research, and a past Chair of the Psychology Section of the American Association for the Advancement of Science. Among the awards he has received are the Troland Award from the National...