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Forgive me, but my understanding is that the heritability of IQ at ~70% is limited to those of higher socioeconomic status, and that it's closer to ~10% for tho

Forgive me, but my understanding is that the heritability of IQ at ~70% is limited to those of higher socioeconomic status, and that it's closer to ~10% for those of lower socioeconomic status. http://ibg.colorado.edu/cdrom2016/franic/Moderation/Lit/Turkheimer_2003.pdf http://ibg.colorado.edu/cdrom2016/franic/Moderation/Lit/Turk... https://www.taylorfrancis.com/chapters/edit/10.4324/9780203838013-9/scarr%E2%80%93rowe-interaction-measured-socioeconomic-status-heritability-cognitive-ability-eric-turkheimer-paige-harden-brian-onofrio-irving-gottesman https://www.taylorfrancis.com/chapters/edit/10.4324/97802038... https://journals.sagepub.com/doi/abs/10.1177/0956797613488394 https://journals.sagepub.com/doi/abs/10.1177/095679761348839... (I should note that beyond an undergraduate degree in linguistics I have essentially no professional qualifications in anything related to neuroscience. Most of my understanding comes from having read some Sapolsky and Steinberg cover to cover a few times, with a limited deep dive into late adolescent risk calculation and risk-taking related to a homicide case I was on.) Is my understanding mistaken? Why?

esyir 5y ago
Not OP, but have genetics background in other fields (not intelligence). The following is a bit of a mix A way you could look at this would be to think as heritability here as the cap of your intelligence. No matter how hard you try, barring some sort of magical medical intervention, your maximal intelligence is limited by your genetics. However, that's the maximum. There are many ways to reduce IQ (lead a famous example here, nutrition another). I think it's not an unreasonable hypothesis that those in lower socioeconomic brackets might increasingly encounter the damaging effects which might have an outsized effect on IQ. More factors than just heritability might create that effect you've mentioned.

esyir 5y ago

Not OP, but have genetics background in other fields (not intelligence). The following is a bit of a mix A way you could look at this would be to think as heritability here as the cap of your intelligence. No matter how hard you try, barring some sort of magical medical intervention, your maximal intelligence is limited by your genetics. However, that's the maximum. There are many ways to reduce IQ (lead a famous example here, nutrition another). I think it's not an unreasonable hypothesis that those in lower socioeconomic brackets might increasingly encounter the damaging effects which might have an outsized effect on IQ. More factors than just heritability might create that effect you've mentioned.