Flynn Effect

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what is the Flynn Effect

The Flynn Effect refers to the steady, worldwide rise in average IQ scores from one generation to the next over the 20th century.

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Key Points

IQ scores in many countries increased by about 3 points per decade.

The effect was found across different cultures, socioeconomic levels, and types of IQ tests.

The rise is not genetic, it happened too quickly for genes to change.

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Why did IQ scores rise?

Better nutrition and health

More years of schooling

More cognitively complex environments

Smaller family sizes

Better public health

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