@jmw150 @niggy Steve Sailer and his commentators have been discussing this from a different angle, how the SAT is getting changed as of late and how a huge 40 point bump in scores for Asians can only be explained by the tests becoming something you can really study for.
Compare as an extreme the pre-1994 SAT which was a very accurate proxy for IQ, although for the verbal test you needed to be well read/have a large and accurate vocabulary.
Here’s the latest, started yesterday: https://www.unz.com/isteve/dalliard-the-sat-and-racial-ethnic-differences-in-cognitive-ability/