Correlation of around .2. Not high at all. Source (pg 87): https://www.amazon.com/Genes-Brains-Human-Potential-Intelligence/dp/0231178425 …pic.twitter.com/V7jesRcB7r
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I don't know why the SAT-IQ correlation is so low there, but I suspect something is wrong with those IQ tests. In general the SAT is a high quality test.