Mark Regnerus is associate professor of sociology at the University of Texas at Austin, a research associate of the university's Population Research Center, and a senior fellow at the Austin Institute for the Study of Family and Culture. His areas of research are sexual behavior and family formation. He's the author of two books (2007 and 2011) on the sexual behavior of teenagers and young adults. His new research on the adult children of parents who have same-sex relationships is published in the July 2012 issue of Social Science Research, and is available here. It's understandably drawn a great deal of scrutiny, and so he wrote a follow-up response to critics and made the data publicly available to other scholars. A dialogue about the study's findings appeared in Slate and is available here. Mark has also written several short essays about data collection on same-sex parenting, polling about same-sex marriage, new evidence from Canada, and thoughtful assertions about how same-sex marriage may shape the wider mating market. Prior to this work, he primarily focused on heterosexual behavior and the dynamics of contemporary mating markets, a summary piece of which was published in the journal Society and is located here as well as in his book entitled Premarital Sex in America: How Young Americans Meet, Mate, and Think about Marrying. His Slate article on the low cost of sex was the ninth-most downloaded Slate article of 2011.