Sandi W. Smith (Ph.D., University of Southern California) is Professor in the Department of Communication at Michigan State University, where she teaches courses in persuasion, communication theory, and interpersonal communication, and Director of the Health and Risk Communication Center. Her research interests parallel these course topics, and her research has been funded by foundations and government agencies such as the Kaiser Family Foundation, the Fetzer Institute, the U. S. Department of Education, and the National Cancer Institute. In specific, she has focused her research on the impact...