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The Flynn Effect: Gains in mean IQ for world regions

Gain in mean fullscale IQ (Intelligence quotient) for world regions.

OurWorldInData.org/intelligence/ • CC BY

Source: Pietschnig and Voracek (2015)

Note: This only shows how quickly advances were being made. Cross-country comparisons are of limited usefulness in this context since the data is incomplete.

1909

2013

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