> 40 IQ points less on average is no joke. Which is why it's almost certainly junk science. 40 points on a scale normalized around 100 is an absurdly large dis

> 40 IQ points less on average is no joke. Which is why it's almost certainly junk science. 40 points on a scale normalized around 100 is an absurdly large disparity to try and hang on genetics. Are there any heritable traits that show that kind of variation between human populations? Height is a pretty obvious one that ranges dramatically worldwide, but the gap is more like 13%, not 40%! https://en.wikipedia.org/wiki/List_of_average_human_height_worldwide https://en.wikipedia.org/wiki/List_of_average_human_height_w...