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.)