Oh, I don't claim to refute Taleb's claim because reading too much of what Taleb writes makes my head spin in a rather uncomfortable manner, and it would be unfair of me to try refuting Taleb's claims without first coolly considering them. Maybe my IQ is low after all, or maybe I just have a low tolerance for self promotion... either way, my intention is only to speak about my personal experience, which is that the IQ test I happened to take did not seem culturally biased, except perhaps to some woodsman who's never seen a straight line before (but even then I'm skeptical.)
That example probably popped into my head first, because of the long controversy around IQ tests cultural effects and the history of using those tests to make arguments that race determines intelligence