What is a "race"? Are Indians from southern India the same "race" as Laplanders? Are Melanesians the same "race" as Manchurians? Are Tanzanians the same "race" as Guineans? It's all a load o' crap. people have been interbreeding across racial lines so much that there is NO GENETIC distinctions between races. Instead, we classify primarily by pigmentation. It's silly.

But I think tests of human cognition are important just as epidemiological studies of heritable diseases are important.