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Alex DeLarge's avatar

You wrote: "Interestingly, “genotypic IQ” as estimated from DNA turns out to estimate the highest degree of liberalism of all the approaches."

That's obviously because "genotypic IQ" in GWAS studies is not based directly on IQ but is based on the proxy measurement of years of "educational attainment." And attaining a high degree of liberal education makes you liberal by definition because that's how they teach you to think. Also, liberals naturally tend to get more liberal education than conservatives because they agree with it and enjoy it more than conservatives do. Finally, the political label of "liberal" is effectively defined in the first place as the set of attitudes held in high status by "The Cathedral" (i.e., members of the academy and educated professional classes).

So the study is really nothing but circular reasoning stating that "people who go to many years of school have the same attitudes as the members of the highly-schooled social class."

The positive correlation with actual measured IQ (vs. polygenic score for "educational attainment") is also predictable because IQ correlated very highly with years of education (which is exactly why they use it as the proxy for IQ). But it's the education itself, not high IQ, which is driving the correlation. If they held education constant their correlation between estimated IQ and "liberal" attitudes would disappear. This is evidenced by the very fact that the "educational attainment" proxy is a stronger predictor than actual IQ.

Conservative commentators are presenting this low-IQ paper as if it's a test for whether conservatives are willing to "trust the science" when it insults them. But the flawed conclusion actually proves the opposite -- that you should always distrust "the science" when it is confirming politically correct conclusions. It will usually fall apart when you really examine the underlying logic and data.

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R.G. Camara's avatar

Good for them, we're still right.

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