3 ms·

Psychopathy as predictor for violence is well established. There is a ton of literature on it. This study is large scale and try to control for other variables:

• dkarl 2y ago
  That study looks exclusively at people who chose violence in situations where it had predictably negative consequences for themselves. I don't think studies of people who commit crimes in heavily policed societies and predictably end up in prison can tell us much about times and places where violence often paid off in big ways.
• lo_zamoyski 2y ago
  Assuming it is heritable, then castration for rape and the death penalty for murder would be incidentally eugenic. These are defensible on independent grounds, however.