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

Re:Average IQ scores seem to have been falling and populatio... by EGreg on Friday September 29, 2017 @10:29AM (#15365556)
What about the Flynn effect?

Could it be this:

http://www.advancedsciencenews.com/co2-on-the-brain-and-the-...

https://thinkprogress.org/exclusive-elevated-co2-levels-dire...

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Re:Average IQ scores seem to have been falling and populatio... by sin7 on Friday September 29, 2017 @10:35AM (#15365626)
Stopped somewhere around 2000.
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