It doesn't address any of the issues mentioned in that thread you linked, just mentions one about genetic distance and then ignores it.
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A splainer’d be great
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Loads of things that could go wrong when testing a polygenic score using one population as the discovery & training sample on another population. Effect sizes, effect directions, interactions of SNPs can vary across populations;
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Replying to @salonium @paul_hundred and
Ashkenazi Jews are mostly European by ancestry, not that distant genetically.
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Replying to @gcochran99 @salonium and
What do you mean by mostly European? They are almost full EEF, have 0% ANE. In this case Turks and Iranians would be mostly European too.
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Mostly Italian, plus some French and Eastern European.
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Replying to @gcochran99 @salonium and
This seems unlikely to me, their position on the pca would be different.
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Replying to @CplusKx @gcochran99 and
Their position on the pca is right next to South Italians.
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Replying to @crimkadid @CplusKx and
This does reinforce Saloni’s point about eg the Reich North-South height paper overestimating selection, because with Wisconsin we’re comparing mostly Med Ashkenazim to northern Europeans (Italians only a few percent, Greeks trivial)
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Replying to @paul_hundred @CplusKx and
The point being what, that the paper mistakes a general intellectual advantage in Middle Easterners for a specifically Ashkenazi one? That might work, if like with N. Europeans and height, there clear indicators that Middle Easterners were smarter than Euros. There aren't though.
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The fact that South Italians and Ashkenazi Jews possess very similar proportions of South European vs. Middle Eastern ancestry and yet dramatic differences in mental ability is strong evidence for selection, not the other way around.
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Replying to @crimkadid @CplusKx and
Not talking about the general proposition of selection for intelligence, talking abput whether one paper crossed its t’s and dotted its lower-case j’s
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Replying to @paul_hundred @crimkadid and
Well, since it is impossible for people to admit some obvious conclusions without suffering professional death, argument is hobbled.
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