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The Minnesota Study of Twins Reared Apart was a twin study conducted at the University of Minnesota, independent of the Minnesota Center for Twin and Family Research. In 1979, Thomas J. Bouchard began to study twins who were separated at birth and reared in different families.
Thomas J. Bouchard Jr. (born October 3, 1937) is an American psychologist known for his behavioral genetics studies of twins raised apart. He is professor emeritus of psychology and director of the Minnesota Center for Twin and Adoption Research at the University of Minnesota.
However, adoption studies show that by adulthood adoptive siblings aren't more similar in IQ than strangers, [42] while adult full siblings show an IQ correlation of 0.24. However, some studies of twins reared apart (e.g. Bouchard, 1990) find a significant shared environmental influence, of at least 10% going into late adulthood. [39]
Born in Minneapolis, Minnesota, David Lykken was the youngest of seven children born to Henry G. Lykken and his wife Frances. He joined the United States Navy at 17 and then attended University of Minnesota on the G.I. Bill, earning his Bachelor of Arts (psychology, philosophy and mathematics) 1949, his master's degree in psychology and statistics in 1952, and his doctorate in clinical ...
He is known for his research using twins to study human behavioral traits such as alcoholism [5] and IQ. [6] This included working as a consultant on the Minnesota Study of Twins Reared Apart in the 1970s. [7] He began collaborating with scientists at the University of Helsinki in 1984, and received an honorary doctorate from this university in ...
The Minnesota Transracial Adoption Study examined the IQ test scores of 130 black or interracial children adopted by advantaged white families. The aim of the study was to determine the contribution of environmental and genetic factors to the poor performance of black children on IQ tests as compared to white children.
In Tuesday's game, the White Sox jumped to a 2-0 lead, then retook the lead at 4-2 after the Twins tied the game in the fifth. Minnesota then rallied for a 5-4 lead with a two-run eighth before ...
A later study in the mid-1980s, resulting in a paper awarded the Kurt Schneider Prize, concluded that children of identical twins were at higher risk than those of fraternal twins, indicating the non-schizophrenic identical twin passed on a latent genetic disposition, even if it had not been expressed through schizoida. [14]