The Dwarkesh Reference
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Claim? Unverified

A genetic predictor of cognitive performance rose ~1 standard deviation over the last 10,000 years, strongest 5,000-2,000 years ago (the Bronze Age), with essentially none in the last 2,000.

Who
David Reich
Topic
Cognitive predictor
Verification note
From the preprint; using modern GWAS polygenic scores as a proxy for ancient cognition is methodologically contested. Treat as preliminary.