4 ms·
The study you reference: https://www.gwern.net/docs/genetics/heritable/adoption/2022-segal.pdf https://www.gwern.net/docs/genetics/heritable/adoption/2022-...
by sbierwagen 4y ago
The study you reference: https://www.gwern.net/docs/genetics/heritable/adoption/2022-segal.pdf https://www.gwern.net/docs/genetics/heritable/adoption/2022-...
The South Korean twin had an IQ of 100 (Slightly below average for her country) and the US twin had an IQ of 84. (Significantly below average)
So, still no evidence of an intervention that can increase IQ, but plenty of evidence that it can be lowered.
- gwern 4y agoYep. Note the US twin was literally whacked on the head, and that's probably why this MZA pair is so very unusual (and popularized, unlike other MZA reports like the authors' prior one, incidentally) and breaks away from the usual MZA correlation of ~.8.