Christopher Ryan (author)

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Christopher Ryan
Dr. Christopher Ryan.jpg
Born (1962-02-13) February 13, 1962 (age 57)
ResidenceLos Angeles, California
EducationSaybrook University
Spouse(s)Cacilda Jethá

Christopher Ryan (born February 13, 1963) is an American author best known for co-authoring the book Sex at Dawn (2010). 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.[1] His master's thesis examined difference in specific personality measures between working fashion models and the general public.[2] His doctoral dissertation analyzed the prehistoric roots of human sexuality, and was guided by the psychologist Stanley Krippner,[3] a humanistic psychologist, with additional committee members Sabrina Zirkel and Jürgen W. Kremer.[4]

Ryan gave a TED talk[5] titled Are we designed to be sexual omnivores? in February 2013, contributes to Psychology Today[6] and hosts a popular podcast called Tangentially Speaking with Dr. Christopher Ryan.[7]

He is married to his sometime collaborator and co-author of Sex at Dawn, Cacilda Jethá.[8]


  1. ^ Seidman, Barry F.; Dowret, Arnell (2011-02-27). "Speaking of Sex". The Humanist (March–April 2011). Retrieved 2017-08-29.
  2. ^ . 2000. ISBN 9780493717630. Missing or empty |title= (help)
  3. ^ "The Authors / FAQ". Archived from the original on 2012-05-20. Retrieved 2012-06-07.
  4. ^ Ryan, Christopher Patrick (2003). "Human sexual behavior in the Pleistocene: A challenge to the standard model of human evolution". Saybrook University, ProQuest Dissertations and Theses. Retrieved 2017-08-29.
  5. ^ Ryan, Christopher (February 2013), Are we designed to be sexual omnivores?, TED2013: TED Talks, retrieved 2017-08-29
  6. ^ "Sex at Dawn". Psychology Today. Retrieved 2017-08-29.
  7. ^ "Tangentially Speaking". Retrieved 2014-07-21.
  8. ^ Ryan, Christopher (2012-07-27). "For the Record". Psychology Today. Retrieved 30 July 2012.

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