[ereldon]

Exactly. What most studies on racial differences prove are the preconceived notions of the experimenters.

In fact, most scientific studies may be wrong, or at least deeply flawed:

http://www.newscientist.com/article/dn7915.html

When one considers the hundred years of horrific racism present in white culture, it's hardly surprising that such cultural attitudes manifest themselves from time to time in the form of sophisticated scientific arguments.

Whether or not there are genetic differences, doesn't the most accurate approach -- if not the most ethical approach -- seem to be withholding all race-based judgement for the time being?