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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 Ygg2 on Friday September 29, 2017 @07:23AM (#15364343)
Yeah, but your explanation conflicts with the article explanation.
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Re:Average IQ scores seem to have been falling and populatio... by danieltillett on Friday September 29, 2017 @07:36AM (#15364390)
Not at all as there are two effects going on.

You become dumber as you get older (I unfortunately know this from personal experience), while the average intelligence of each generational cohort can also be changing through differential reproduction.

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Re:Average IQ scores seem to have been falling and populatio... by Ygg2 on Friday September 29, 2017 @11:28AM (#15366119)
Yeah, but you becoming dumber as you get older won't affect scores, assuming each generation is tested at same point in their life. That's why I asked about their method.
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Re:Average IQ scores seem to have been falling and populatio... by godshatter on Friday September 29, 2017 @06:28PM (#15369796)
They did talk in the article about how more subjects sitting for IQ tests are 60 or older, so they must do more than just test once in a person's life, or they have been branching out and testing more people.
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