Dr. Christopher Ryan is an American author best known for co-authoring the book Sex at Dawn. He received a B.A. in English and American literature in 1984 and an M.A. and Ph.D. in psychology from Saybrook University, an accredited hybrid low-residency/online learning program based in San Francisco twenty years later. His masters thesis examined difference in specific personality measures between working fashion models and the general public.
Ryan gave a TED talk in February 2013, contributes to Psychology Today and has an interview podcast called Tangentially Speaking with Dr. Christopher Ryan.