Nobel Prize scientist - Black people are dumb

[ChrisV]

[ QUOTE ]
I'd imagine part of it is due to malnutrition. If as a child you don't have enough proteins etc., this can stunt brain development. Africa has a far higher number of people who grow up essentially starving than Europe. I wouldn't base it on genetics, but on how one grows up. If one's mind is constantly stimulated (good education) and one's stomach fed, then the person has the ability to meet up to their potential. If either of these things is not true, then brain growth can be stunted

[/ QUOTE ]

These factors are always controlled for. Pretty much the sole thing that can't be completely controlled for is that being a part of, for instance, "black culture" is a disincentive to mental development. But this argument seems dubious in light of the fact that the biggest differences are found in tests which are the most abstract (more technically, the most g-loaded tests - g being the General Mental Factor) and not tests which involve things like knowledge or memory, which one would expect to be more affected by cultural environment.