The strongest correlation of IQ to behavioral issues is that the higher the IQ the higher the rates of depression. It seems being stupid has a lot of drawbacks, but dumbasses are rarely depressed. The relationship between IQ and psycho/social pathy is still being argued to this day. I think there's decent evidence supporting the opposite of what you intimate - sick fucks tend to actually be smart. However, many people argue that hormonal imbalances (i.e. it's your chemicals, man) are a big cause of "wickedness". Fascinating subject should you wish to explore it further.