David T. Lykken | |
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| Born | David Thoreson Lykken 18 June 1928 Minneapolis, Minnesota, U.S. |
| Died | 15 September 2006 (aged 78) |
| Alma mater | University of Minnesota (BA, MA, PhD) |
| Known for | Twin studies, lie detection, set-point theory of happiness |
| Scientific career | |
| Fields | Psychology, behavioral genetics |
| Institutions | University of Minnesota Deep Springs College |
David Thoreson Lykken (June 18, 1928 – September 15, 2006) was a behavioral geneticist and Professor Emeritus of Psychology and Psychiatry at the University of Minnesota. He is best known for his work on twin studies and lie detection.