I've seen this firsthand in my own family, a family beset with undiagnosed ADHD and trauma from a violent patriarch, who was no doubt subject to the same abuse, lying about his age to join armies on BOTH sides of the conflict in WW2 to escape and eventually emigrate.
As for the difference in psychological resilience: it's more much more likely those who have been traumatised are seeking understanding, rather than healthy then traumatised by their curiosity. Conversely, it's been shown religious people are, as a whole, more psychologically resilient, largely due to community and the accompanying support system it provides. However, there is also a strong element of suppression within those communities, which directly contributes to the very trauma of which I speak.
If there is no communication, the abused, very often, become the abusers. And so the wheel turns.