[rictic]

That's a comforting narrative, that good parents couldn't end up with terribly behaving and out of control children. I think that good parenting probably does greatly reduce the chance, but it would be surprising if it totally eliminated the possibility.

[manmal]

Brain disorders (like fetal alcohol spectrum disorders, which can be caused by drinking moderately before becoming aware of pregnancy) can do that to children of well-behaving and loving parents.