Bad eyesight gene may heighten IQ, or the genes are intercorrelated somehow. So the arrow can go both ways. I would think that humans think in clusters rather that A → B.
Re the correlation between nearsightedness and IQ. Someone on Scott’s blog post re Ashkenazi IQ mentioned that the blindness gene has a correlation with High-IQ.
No real politics behind the correlation (which is why OP used it as an example) so my prior would be high; though I would have to check the trail to see if the findings stand up.
Also, we have a good evolutionary/social principle of a costly signal. Bad eyesight and still survive natural selection.
I thought the standard explanation for why smart people wear glasses is that smart people are likely to spend more time reading books, which isn’t that good for one’s eyes. Conversely, if one is nearsighted one will have an easier time reading books than playing sports, and so is likely to at least become more knowledgeable.
I do not want theories for how eyesight and IQ may be correlated—I want statistics showing bad eyesight and IQ are significantly positively correlated. The theories can come after. Do we have statistics that show that?
Bad eyesight gene may heighten IQ, or the genes are intercorrelated somehow. So the arrow can go both ways. I would think that humans think in clusters rather that A → B.
Re the correlation between nearsightedness and IQ. Someone on Scott’s blog post re Ashkenazi IQ mentioned that the blindness gene has a correlation with High-IQ.
https://www.hindawi.com/journals/joph/2015/271746/
No real politics behind the correlation (which is why OP used it as an example) so my prior would be high; though I would have to check the trail to see if the findings stand up.
Also, we have a good evolutionary/social principle of a costly signal. Bad eyesight and still survive natural selection.
I thought the standard explanation for why smart people wear glasses is that smart people are likely to spend more time reading books, which isn’t that good for one’s eyes. Conversely, if one is nearsighted one will have an easier time reading books than playing sports, and so is likely to at least become more knowledgeable.
I do not want theories for how eyesight and IQ may be correlated—I want statistics showing bad eyesight and IQ are significantly positively correlated. The theories can come after. Do we have statistics that show that?
Dude. https://scholar.google.com/scholar?q=myopia+intelligence+OR+IQ https://en.wikipedia.org/wiki/Near-sightedness#Correlations