Barbara Rolls, Ph.D., is professor of nutritional sciences and the Helen A. Guthrie Chair of Nutritional Sciences at Pennsylvania State University, where she heads the Laboratory for the Study of Human Ingestive Behavior. A veteran nutrition researcher and past president of both the Society for the Study of Ingestive Behavior and the Obesity Society, Dr. Rolls has been honored throughout her career with numerous awards, including Fellow of the American Association for the Advancement of Science and honorary membership in the American Dietetic Association. In 2010 she received the Obesity Socie...