1/6 Day 2. Are mental tests biased against Blacks? This topic has been examined minutely for decades. The two most powerful ways to check for bias are measurement invariance and predictive validity. "Measurement invariance" asks whether a test measures the same construct across groups.

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Here's the plan: Probably the most taboo of all topics involves IQ differences across ethnicities. The topic also has two other characteristics: 1) A great deal is known confidently, with lots of replications and tests for confounding, and 2) hardly anyone on the left is aware of that body of

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knowledge, including academics on the left. They have never been exposed to it or, as in the case of The Bell Curve, have read only the critiques, not the book itself. So the posts I will put up are going to be about ethnic differences in IQ, not because I am obsessed with the subject, but because

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I want to see whether statements of fact, fully documented, worded clinically, are acceptable on BlueSky if they contradict the orthodoxy. A series of posts on sex differences could accomplish the same thing. As it happens, you can see the full version in a book I published in 2020,

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Kapalı içerik

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