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A comment on Average IQ scores seem to have been falling and population ageing may be why. Parent comment

Re:Average IQ scores seem to have been falling and populatio... by CyberDildonics on Friday September 29, 2017 @11:41AM (#15366247)
The book outliers says that research shows roughly half of IQ dictated by genetics. Do you have research that contradicts this?
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Re:Average IQ scores seem to have been falling and populatio... by yasp on Friday September 29, 2017 @11:44AM (#15366280)
50% would be "highly hereditary".
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Re:Average IQ scores seem to have been falling and populatio... by Will_Parker on Friday September 29, 2017 @05:16PM (#15369296)
It's interesting to visualize what % heritable actually means. Here is a graph from a recent study trying to predict height from human genes. They found a correlation of 0.64

https://2.bp.blogspot.com/-4qSTryry0so/WcAhygytvTI/AAAAAAAAS...

That means, in practice, your height outcome tends strongly toward a fairly narrow range around the predicted mean. I found it illuminating to visualize the pattern.

(The full article is http://infoproc.blogspot.ca/2017/09/accurate-genomic-predict...)

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Re:Average IQ scores seem to have been falling and populatio... by Mikeb85 on Friday September 29, 2017 @11:51AM (#15366341)
50% is a lot...
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