Eddie M. Clark, PhD is a Professor of Psychology at Saint Louis University (SLU). His research examines close relationships (infidelity, relationship maintenance, love) and health (health attitudes and behaviors, culturally appropriate health communication, the relationship between religiosity and health). He has authored or co-authored over 70 articles and book chapters. He serves on the editorial boards of the Journal of Social Psychology, Journal of Social and Personal Relationships, and as an associate editor of PsycCRITIQUES-APA Review of Books.  Timothy C. Brock has published articles and book chapters on a wide variety of topics in the psychology of persuasion, including effects of salesperson-consumer similarity on purchasing behavior; the role of cognitive responses in determining acceptance of persuasive messages; processing of unintelligible persuasive messages; and the effect of cognitive tuning on attitude change persistence. He has authored, coauthored, and edited nine books, most on attitudes and persuasion. Dr. Brock is currently Professor of psychology at Ohio State University. David W. Stewart holds the President's Chair in Marketing and Law at Loyola Marymount University, USA. He is a former editor of the Journal of Marketing and the Journal of the Academy of Marketing Science and is the current editor of the Journal of Public Policy and Marketing. He is a co-founder and current chair of MASB and has consulted for a wide array of corporations, government agencies, and not-for-profit organizations.