How is this to be reconciled with the minimal shared environment effects found in twin/adoption studies reported by Judith Harris?
Good size Korean international adoption study into US homes finds moderate sized shared E on adult SES traits. https://www.researchgate.net/profile/Bruce_Sacerdote/publication/24091960_How_Large_Are_the_Effects_from_Changes_in_Family_Environment_A_Study_of_Korean_American_Adoptees/links/55b62f1a08aed621de031e45/How-Large-Are-the-Effects-from-Changes-in-Family-Environment-A-Study-of-Korean-American-Adoptees.pdf …pic.twitter.com/VDouLdk1hd
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Judith Harris is old stuff. IQ usually ~0, this is for SES outcomes. Twin studies generally find low values for these too, so yeah, I don't know.
End of conversation
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