To clarify, that bit is clear, but one should understand that the evidence that that correlation is genetic is much weaker. There are a lot of other possible explanations, including early childhood education, cultural correlates at a young age, nutrition levels, parasite load, stereotype threat, and everything else sometimes put under a catchall of socioeconomic factors. Ashenazi Jews for example are one of the best performing groups, but there are some massive confounding factors since there’s a heavily intellectual culture that emphasizes learning.
To clarify, that bit is clear, but one should understand that the evidence that that correlation is genetic is much weaker. There are a lot of other possible explanations, including early childhood education, cultural correlates at a young age, nutrition levels, parasite load, stereotype threat, and everything else sometimes put under a catchall of socioeconomic factors. Ashenazi Jews for example are one of the best performing groups, but there are some massive confounding factors since there’s a heavily intellectual culture that emphasizes learning.
Thank you for clarifying that.