I’m not sure that would test out experimentally. There are siblings who received the same upbringing; identical twins, even; who are completely different adults. And I’m including major criminal activity in there.
Moreover, people who are raised well can become abusers, while people who were abused often break the cycle. It can’t just be boiled down to parenting.
It doesn’t have to be A or B. They can be self-aware, and not give a shit. They can be selfish and know it’s wrong. I’d argue that’s a pretty common occurrence
