C. Loring Brace on Standardized Testing

If the anthropological evidence...leads us to the conclusion that the average intellectual capability in all living human groups should be exactly the same, then it follows that there is something seriously wrong when tests purporting to measure these capabilities produce different average figures when administered to different groups. Average differences in test scores, rather than indicating inherent differences in intellectual capacity, actually can serve as indicators of the effects of the different learning experiences that are the consequences of social inequality.

C. Loring Brace. 1999. An anthropological perspective on "race" and intelligence: The non-clinal nature of human cognitive capabilities. Journal of Anthropological Research 55(2):245-264. Page 259