Um, brain size differences between races?? There is a strong correlation between this and IQ. The differences were reported a while ago (again) in New Scientist and elsewhere. I'll see if I can dig it up.

In the meantime Wikipedia has an interesting and well referenced article for anyone not familiar with the topic. There is more going on here than cultural or historic differences. Anyone without a bias can see this.

http://en.wikipedia.org/wiki/Race_an...s_among_races)