Previous research suggests that crime is negatively associated with IQ at the individual level and the aggregate state level. The purpose of the present study was to further explore the relationship between state IQ estimates and various categories of violent and property crimes. State demographic information including the gross state product, pupil/teacher ratio, and percent Black, Asian, and Hispanic were included in the correlational analyses. State IQ was significantly and negatively correlated with the violent crimes of murder, aggravated assault and robbery as well as the property crimes of motor vehicle theft, theft and burglary. Additionally, regression analyses were conducted for each crime significantly related to state IQ, controlling for significant state demographic variables. In general, results suggest that the prevalence of both violent and property crimes is associated with lower state IQs.
SO I’m looking for the full text of this, just stored for later reference. One small observation would be that given the racial differences in IQ, this would mean that states with a high percentage of black citizens (IQ about 12-15 points lower) would have a much higher offending rate- not exactly a surprise, as that’s a pattern seen the world over. If I recall, the offending rate for East Asians is about half the white average, which also fits in with the higher East Asian IQ.