I really feel that the large IQ gap causes a lot of discontent leading to violence,(reply>), @K T I am thinking the frustration of not being able to function well or raise one’s standard of living compared to those with higher IQ’s would  likely lead to feeling victimized and angry. Just my thoughts though.,(reply>), Its not so much the gap that leads to violence but the below average intelligence itself. Regular people with iqs around 100 dont get violent when faced with somebody with an iq above 130.<br>Large studies on violent criminals showed that the vast majority of them have iqs one standard deviation lower than average. 2 Standard deviations lower and violent crime drops off sharply as parcticularly dumb individuals arent exactly good at planning or getting away with violent crimes. 2 standard deviations above average and violent crime is almost zero. Parcticularly intelligent individuals are way better at planning and risk assessment and rarely have a need for violence. As a sidenote most large white collar crimes are comitted by individuals one or two standard deviations abbove average.