some of the behaviors of ferals however, I think are simply genetic personality traits...the impulsiveness, the act first, think later, the constant egocentric thought patterns......I don't know how much of that one can be trained out of....
However there have been several cases of children who were classified as "retarded" who when placed in a proper environment suddenly turned out to be quite bright.
Very little of what you call "genetic" implying they are things that can not be changed, are in fact "genetic" in that sense. We are all born self centered and impulsive. These are the traits of child. They are and can be trained out children.
I know of no child that comes out the the womb thoughtful, empathic and patient except perhaps the one that was born in Bethlehem 2000 years ago.
People want to lay it off on genetics I find because it is easier.
Yet you find the same traits in generational welfare children of all shades.