I don't see the relevancy. Hassim Talim (author of black swan, statistician, finance) argues all of psychology is unscientific. In your link he even states IQ

I don't see the relevancy. Hassim Talim (author of black swan, statistician, finance) argues all of psychology is unscientific. In your link he even states IQ is a weak measure for some tasks. That the trend is reversing - people are now getting worse at "test taking" - is notable and interesting. Whether IQ should be used as a proxy for expected real world success doesn't seem relevant to this study. https://en.wikipedia.org/wiki/Nassim_Nicholas_Taleb https://en.wikipedia.org/wiki/Nassim_Nicholas_Taleb