About
Behavioral geneticist who worked on twin studies and lie detection. He was a faculty member at the University go Minnesota for the entirety of his career.
Before Fame
He attended the University of Minnesota where he studied psychology and statistics.
Trivia
He was a member of the American Psychological Association and he was the proponent of a set-point theory of happiness, which posits that one's sense of well-being is half determined by genetics and half determined by circumstances.
Family Life
He had three sons with wildlife advocate Harriet Betts Lykken.
Associated With
He was influenced by Sigmund Freud.