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Index/Topics/Intelligence Quotient and Crime Rates

Intelligence Quotient and Crime Rates

The relationship between Intelligence Quotient (IQ) and crime rates, including violent and non-violent offending, across multiple study designs and settings.

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Jan 6, 2026

is it true that only 4% of crimes are attributable to mental illness

Short answer: No single, universally accepted figure exists, but multiple population-based studies and reviews find that only a small share of violent crimes are directly attributable to non–substance...