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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.
Identical Strangers: A Memoir of Twins Separated and Reunited is a 2007 memoir written by identical twins Elyse Schein and Paula Bernstein and published by Random House. [1] The authors, born in New York City in 1968 to Leda Witt, daughter of Nathan Witt , were separated as infants, in part, to participate in a " nature versus nurture " twin ...
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.
[1] [2] Intelligence in the normal range is a polygenic trait, meaning that it is influenced by more than one gene, [3] [4] and in the case of intelligence at least 500 genes. [5] Further, explaining the similarity in IQ of closely related persons requires careful study because environmental factors may be correlated with genetic factors.
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 ...
The power of twin designs arises from the fact that twins may be either identical (monozygotic (MZ), i.e. developing from a single fertilized egg and therefore sharing all of their polymorphic alleles) or fraternal (dizygotic (DZ), i.e. developing from two fertilized eggs and therefore sharing on average 50% of their alleles, the same level of genetic similarity found in non-twin siblings).
Twin studies are studies conducted on identical or fraternal twins. ... International Society for Twin Studies; J. ... Twins Early Development Study
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).