Quote Originally Posted by Mister D View Post
Agreed. That there exists a genetic or physiological factor in anti-social behavior seems likely to me but I don't perceive this as causative and I don't think it's presented that way either.
Right, "Compared with the other two groups, the 200 men who had committed homicide showed significantly reduced gray matter in several brain regions that play important roles in behavioral control and social cognition." There's a part of us, even if tacit knowledge and not reasoned out, that distinguishes when we can use violence to defend ourselves and when we should not murder.