[dana-s]

Well, one of my formative memories while being a child at school contributes to it, I was once saying some mean thing to another child because of other kids, that child slapped my face back quite good, I don't remember what I was saying, just that it was mean and that the slap made me question "why was I being mean for no reason?", an epiphany which helped me greatly.

On the other side of things, I do remember having suffered some forms of violence from parents and those really did not contribute to anything than showing me why they were bad parents.

[salviati]

That slap was not official punishment. You were interacting with a peer. It's different from what's being discussed here.