Neil D. Weinstein, Ph.D., is a Professor in the Department of Human Ecology at Rutgers University. He studies risk perception, risk communication, and preventive health behavior. His writings have explored unrealistic optimism about personal risk, problems in the analysis of correlational data, and the testing of theories of health behavior. With Peter Sandman, Dr. Weinstein developed the Precaution Adoption Process Model, a stage model of health behavior change. For several years, he led the Theories Project for the Behavioral Research Program at the National Cancer Institute.