Behavioral geneticist who done twin studies and lie detection. He was a faculty member on the School move Minnesota for the entirety of his profession. He went to the School of Minnesota where he examined psychology and figures. He was an associate from the American Psychological Association and he was the proponent of a set-point theory of pleasure, which posits that one’s feeling of well-being is normally half dependant on genetics and half dependant on circumstances. He previously three sons with animals advocate Harriet Betts Lykken. He was affected by Sigmund Freud.