Gifted Issues Discussion homepage Forums GT Research Are the wealthiest countries the smartest?

My absolute first question when I read this is "How did they measure the IQ?"

If they used Raven Matrices, then I might be tempted to think better of it. If they used most of the other available IQ tests, the questions are already biased towards the wealthier countries. For instance, they've shown that the sequencing of the comic-like sections on the WISC differs widely with experience, even in the US, with assumptions being made about things like a child having owned a bike.