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Notes -
This is not quite right. For one, adult intelligence is more like 70-80% heritable. But also, we know this from twin studies, not from genome sequencing. Due to insufficient data (partially due to the inherent difficulty of collecting reliable IQ and genetic data for millions of people, and partly due to ideologically motivated obstruction of such efforts), current GWAS models show only a fraction of the true heritability of IQ. IIRC the best models predict only about 15% of variance in IQ.
Twin studies are the gold standard for estimating heritability; the advantage of GWAS is that it can give us actual models to predict IQ from genetic sequences.
I changed your "~50%" to "roughly 50%" because the site interpreted a quoted tilde as markup for strikethrough.
Thanks!
The first thing was more of a composition error - I mean to imply that the whole basket of traits were somewhere around 50%.
The second mistake was just implying something incorrect though. I know that, I just wasn't paying enough attention while writing so broadly.
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