alliumnsk comments on Q&A with Harpending and Cochran - Less Wrong

26 Post author: MBlume 10 May 2010 11:01PM

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Comment author: alliumnsk 23 March 2015 08:06:49AM 0 points [-]

If the genetic explanation is true and environment makes no contribution, then I think one should find that IQ is more highly correlated with myopia than academic achievement

It's like saying "if evolution is true, crocoducks should exist". You are (deliberately?) misrepresenting opponent's views. He meant that of all genetic variation affecting IQ, only small, but non-negligible, subset affects both myopia and IQ. However I still don't quite get how larger brain can cause myopia rather than hyperopia.

Comment author: Jiro 23 March 2015 07:17:20PM 0 points [-]

Maybe the larger brain leads to more intelligence, and people with more intelligence read more, and reading more leads to myopia. (Whether reading actually leads to myopia can be questioned, but that doesn't affect the point.)