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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.
The Twins Early Development Study (TEDS) is an ongoing longitudinal twin study based at King's College London. The main goal of TEDS is to use behavioural genetic methods to find out how nature ( genes ) and nurture (environments) can explain why people differ with respect to their cognitive abilities, learning abilities and behaviours.
Soon after the twins reunited for the first time in 2004 at the age of 35, they began writing the book. Of the 13 or more children involved in the study, three sets of twins and one set of triplets have discovered one another. One or two sets of twins may still not know they have an identical twin. [4] [5]
Burt was born on 3 March 1883, the first child of Cyril Cecil Barrow Burt (b. 1857), a medical practitioner, and his wife, Martha Decina Evans. [2] He was born in London (some sources give his place of birth as Stratford-upon-Avon, probably because his entry in Who's Who gave his father's address as Snitterfield, Stratford; in fact the Burt family moved to Snitterfield when he was ten).
In 1923, in his book A study of American intelligence, Carl Brigham wrote that on the basis of the Yerkes army tests: "The decline in intelligence is due to two factors, the change in races migrating to this country, and to the additional factor of sending lower and lower representatives of each race." He concluded that: "The steps that should ...
The Bell Curve: Intelligence and Class Structure in American Life is a 1994 book by the psychologist Richard J. Herrnstein and the political scientist Charles Murray in which the authors argue that human intelligence is substantially influenced by both inherited and environmental factors and that it is a better predictor of many personal outcomes, including financial income, job performance ...
Franz Josef Kallmann, MD (July 24, 1897 – May 12, 1965), a German-born American psychiatrist, was one of the pioneers in the study of the genetic basis of psychiatric disorders. He developed the use of twin studies in the assessment of the relative roles of heredity and the environment in the pathogenesis of psychiatric disease.
Nancy L. Segal was born a twin in Boston, Massachusetts, in 1951.She received a B.A. from Boston University (psychology, with honors and English literature, double major, 1973), a M.A. from the University of Chicago (Division of Social Sciences, 1974), and was awarded a Ph.D. from the University of Chicago (Committee on Human Development, 1982).