Featured Blogger: Christopher Ryan, Ph.D. http://bit.ly/H7wC0D

Christopher Ryan, Ph.D., is a psychologist, teacher, and author. Together with Cacilda Jethá, M.D., he is a co-author of the New York Times best seller, Sex at Dawn: The Prehistoric Origins of Modern Sexuality. He received a BA in English and American literature in 1984 and an MA and Ph.D. in psychology from Saybrook University, in San Francisco, CA. Christopher regularly contributes to both