Source: Astral Codex Ten
by Scott Alexander
“…the bad news is that they can’t agree which one. I explained the debate more here, but the short version is: twin studies find that most traits are at least 50% genetic, sometimes much more. But molecular studies – that is, attempts to find the precise genes responsible – usually only found enough genes for the traits to be ~10-20% genetic. The remaining 35% was dubbed ‘missing heritability.’ Nurturists argued that the twin studies must be wrong; hereditarians argued that missing effect must be in hard-to-find genes.” (12/03/25)
https://www.astralcodexten.com/p/the-good-news-is-that-one-side-has