I don't mean "pimping" literally

Sorry to keep pimping Malcolm Gladwell but a line from this article is too curious to resist:

"If I.Q. is innate, it shouldn't make a difference whether it's a mixed-race child's mother or father who is black. But it does: children with a white mother and a black father have an eight-point I.Q. advantage over those with a black mother and a white father."