Abstract
Theories of evolution inspired nineteenth-century scientists to investigate the effects of physical and mental traits upon heredity. The controversies that arose are divisible into two consecutive periods. The "onset" period , which spans the years of the late nineteenth century, centers on the contributions of Charles Darwin, FrancesGalton, and Karl Pearson. During this time, the promise of selective breeding led to the founding of the eugenics movement. The "flowering" period, which en compasses the early years of the twentieth century, deals mainly with Lewis M. Terman's attempts to resolve nature-nurture disputes associated with intellect and gift edness. The commentary covers events that led to the 1928 yearbook, Nature and Nurture. Their influence on intelligence. It also reviews probable bases for rapprochement among contemporary proponents who argue for the primacy of nature and those who call for emphasis on nurture.
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