Mark Regnerus is an associate professor of sociology at the University of Texas at Austin and a faculty associate at the university's Population Research Center. His research is in the areas of sexual behavior, family, marriage, and religion. Mark is the author of over 40 published articles and book chapters, and three books: Premarital Sex in America: How Young Americans Meet, Mate, and Think about Marrying (Oxford, 2011), which describes the norms, behaviors, and mating market realities facing young adults, and Forbidden Fruit: Sex and Religion in the Lives of American Teenagers (Oxford, 2007), which tells the story of how religion doesand does notshape teenagers' sexual decision-making. His work has been widely reviewed, including in Slate, the Dallas Morning News, Atlanta Journal-Constitution, and The New Yorker, and his research and opinion pieces have been featured in numerous media outlets. He was the author of a 2012 study appearing in Social Science Research on the comparatively optimal outcomes of young adults from stably-married families. His latest work concerns the influence of technology on sexual behavior and relationship formation.