Personality and intelligence

The Flynn effect is the long-term rise in average IQ test scores, about 3 points per decade across the 20th century. Its causes and meaning are still debated.

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Starter thread · AI-reviewed against its sources

The MBTI shows decent internal consistency and some overlap with Big Five measures, but weaker test-retest stability and predictive power. Its publisher and many academics disagree about how valid it is.

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Starter thread · AI-reviewed against its sources