Earthborn said:
Assuming for a moment that it is true: perhaps because society is also culturally biased?
You could assume that not only are qualities that some cultures have not measured by IQ tests, they are also not valued by society.
No offense, but your arguments remind me of a creationist trying to explain the fossil record.
I'm not a big fan of parsimony, but how bad would your world view be shattered if indeed the race difference was real, and was caused by biology or genetics?
However I don't believe IQ is such a good measure of future success
That's like saying "I don't believe in evolution"-- as if your belief on the subject had any affect on its truth or falsity.
Just to review, the correlation between iq and:
1) grade point average = .50
2) years education = .55
3) Socioeconomic status (i.e., income) = .33
4) Job performance .3 to .5 (few others do as well, none as cheaply)
5) teenage pregnancy and juvenile delinquency rates, -.19
Odds the average Ph.D. has a lower IQ than the average high school grad-- 100:1.
Find any other single measure of anything ever tested for that predicts so much and so well as IQ does.