As shown in the graph below, the prevalence of violent behavior dropped steadily with increasing IQ: 16.3% of individuals with IQs in the 70-79 range reported violent behavior, compared with just 2.9% of those with IQs of 120-129. The link held even after controlling for demographic factors, childhood adversity, substance use, and mental health.
I would note that the graph does not go to zero, as far as we know. That even smart people sometimes fight someone suggests that sometimes it's a good calculation. Even Jesus beat the moneylenders out of the Temple.
Among the possible reasons mentioned, I would add that in the emergency psych biz we would note that less intelligent people could not articulate their complaints as well and got frustrated by this.
1 comment:
How about: less-intelligent people are not as good at predicting the consequences of their actions?
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