Race, Evolution, and Behavior: A Life History Perspective

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Transaction Publishers, 1995 - Heredity, Human - 334 pages
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Rushton's thesis is that when fully modern humans migrated out of Africa, perhaps only 100,000 years ago, the colder Eurasian climate selected for larger brains, more forward planning, greater family stability, and increased longevity with concomitant reductions in sex hormone, speed of maturation, reproductive potency, and aggressiveness. Rushton's theory emphasizes a trade-off between parenting and mating and brings into focus the concept of a coordinated life history of characteristics, evolving together, to replicate genes more effectively. The selection for large brains and parenting skills was taken furthest in east Asia. Rushton's theory explains differentiation in intelligence and predicts other, seemingly unrelated race effects, such as differences in frequency of twinning. The capacity to unify disparate phenomena is usually considered a virtue in theories.

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Character Traits
Behavioral Genetics

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