I haven't heard this along with any reasoning for why Blacks may do worse in many areas, even when adjusting for current socioeconomics. This is not meant as a racist argument. Its something I've brought up in the past. Epigenetics.
If poverty and abuse over time can cause changes in the way genes are expressed, it would stand that it is very possible that for the generations Blacks were enslaved and restricted to lower levels, and discriminated against, that this could effect their behavior here. It could increase cortisol (something measured as higher in African Americans), and other things.
Anyways, I just feel that this should be considered when people quote statistics. Because it is true that Blacks don't test as well on average- this is not racist, its reality. And it is true that they disproportionately commit more violent crime.
Anyways I just haven't seen anyone, even on the liberal opposition use this in rational arguments (cant really expect rationality from them however in many cases). Here is a link, and although it doesn't mention anything other than health effects, I do believe it is possible that it could, along with continued socioeconomic perpetuation, play into things, and those with each other.
They're damaged, largely, to put it one way. Some rise above.
This is not meant to explain it all. Just an idea that "hey this seems to do something... Why couldn't it also do this?".
Anyways, I just wanted to share. I don't think I deserve to be attacked for it, as this post was more in their defense, or in defense of explanation/understanding.
http://m.huffpost.com/us/entry/4094226
The Epigenetics of Being Black and Feeling Blue: Understanding African American Vulnerability to Disease