William Marelich is a professor of psychology within the College of Humanities and Social Sciences at California State University, Fullerton. He received his Ph.D. from Claremont Graduate University and completed a two-year NIMH Postdoctoral Scholar appointment at UCLA. He has also been a lecturer at UCLA in the departments of psychology and sociology, and a Scholar in Residence at Scripps College. Dr. Marelich's research interests and publications address decision-making strategies in health settings, HIV/AIDS, and statistical/methodological approaches in experimental and applied research. He has over 80 peer-reviewed publication and monographs, and coauthored the books The Social Psychology of Health and Advanced Statistics for Kinesiology and Exercise Science.