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knb comments on When does heritable low fitness need to be explained? - Less Wrong Discussion

15 Post author: DanArmak 10 June 2015 12:05AM

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Tags: ssc evolution

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Comment author: knb 10 June 2015 08:56:01PM 0 points [-]

How big a selection pressure does higher IQ command?

Enough that Homo Sapiens has a brain volume nearly twice as high as Homo Habilis. (~600 cc to ~1200 cc).

Comment author: DanArmak 10 June 2015 09:14:17PM 0 points [-]

I'm asking about selection today, or in the last few millenia, not two million years ago in a different species.

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