KAREN GLANZ, PhD, MPH, is George A. Weiss University Professor, professor of epidemiology and nursing, and director of the Prevention Research Center and the Center for Health Behavior Research at the University of Pennsylvania.

BARBARA K. RIMER, DrPH, is dean and Alumni Distinguished Professor in the Department of Health Behavior in the Gillings School of Global Public Health at the the University of North Carolina at Chapel Hill.

K. VISWANATH, PhD, is professor of health communication in the Department of Social and Behavioral Sciences at the Harvard T.H. Chan School of Public Health and in the McGraw/Patterson Center for Population Sciences at the Dana-Farber Cancer Institute.