Christopher Ryan

Christopher Ryan

Christopher Ryan, Ph.D. is a psychologist, teacher, and author. Together with Cacilda Jethá, M.D., he is a co-author of Sex at Dawn: The Prehistoric Origins of Modern Sexuality (to be published by HarperCollins in 2010). They live together in Barcelona, Spain.

His PT blog is Sex at Dawn.

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Heartbreak and Home Runs: The Power of First Experiences

How early life experiences shape our character.