Toddlers match chimpanzees on tests of space, quantity and causality despite far larger brains and beat them only at social learning, so most of human intelligence is learned from others, not innate.

Evidence 2 passages

• groundsSource document

  On all the subtests of mental abilities, except social learning, there's essentially no difference between chimpanzees and two-and-a-half-year-old humans, despite the fact that the two-and-a-half-year-olds have much larger brains.

• groundsSource document

  By contrast, for the social learning subtest, averages actually conceal the fact that most of the two-and-a-half-year-olds scored 100% on the test, whereas most of the apes scored 0%.

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