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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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2 results
Jan 27, 2026

How do studies control for socioeconomic status, education, and family background when linking IQ to violent crime?

Researchers link lower IQ to higher rates of violent and persistent offending but do not assume that relationship is simple or unconfounded; studies increasingly use measured , schooling variables, an...

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...