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The relationship between IQ scores and socially defined racial groups is complex and influenced by various factors, including environment, history, and genetics.
Both shape measured IQ: genetics account for a substantial and increasing share of variance with age while often predicts early and persistent differences and can change how genetic influences are exp...
Education and the broader environment clearly influence measured IQ: multiple quasi-experimental meta-analyses and cohort studies estimate that each additional year of schooling raises IQ test scores ...