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The assertion that 80 percent of intelligence is due to heredity is often attributed to various psychologists and researchers in the field of intelligence studies, particularly those associated with the nature versus nurture debate. One prominent figure linked to the idea is Sir Francis Galton, who was an early pioneer in the study of intelligence and its hereditary aspects. However, it’s important to note that contemporary research suggests that intelligence is influenced by a complex interplay of both genetic and environmental factors, and estimates regarding the heritability of intelligence can vary widely.

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2w ago

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