William L. Yarber is professor of applied health science and professor of gender studies at Indiana University, Bloomington. He is also senior research fellow at The Kinsey Institute for Research on Sex, Gender, and Reproduction and senior director of the Rural Center for AIDS/STD Prevention at Indiana University. He has authored or co-authored over 100 scientific reports on sexual risk behavior and AIDS/STD prevention in professional journals. He also authored the country's first secondary school AIDS prevention curriculum. He is past president of The Society for the Scientific Study of Sexuality (SSSS) and past chair of the board of directors of the Sexuality Information and Education Council of the United States. He has received $3 million in federal and state grants to support his research and AIDS/STD prevention efforts. His awards include the 2002 SSSS Award for Distinguished Scientific Achievement, the 2002 Research Council Award from the American School Health Association, and the President's Award for Distinguished Teaching and the Graduate Student Outstanding Faculty Mentor Award at Indiana University. He regularly teaches undergraduate and graduate courses in human sexuality. He has presented papers at numerous national and international conferences. He was previously a faculty member at the University of Minnesota and Purdue University, as well as former public high school health science and biology teacher.