Article Correctness Is Author's Responsibility: Bigger Brains Are Not Much Smarter Than Smaller Ones

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Using a large dataset and controlling for a variety of factors, including sex, age, height, socioeconomic status, and genetic ancestry, scientists found that people with larger brains rated higher on measures of intelligence and educational attainment. Size was far from everything, however, explaining only about two percent of the variation in smarts.

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