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A comment on Leaded fuel reduced IQ of children born before 1990. Parent comment

Re:Leaded fuel reduced IQ of children born before 1990 by q1w2 on Wednesday October 20, 2021 @02:34PM (#28934316)
I wonder if this has anything to do with the correlative studies that showed that higher IQ individuals have less children on average.

https://en.wikipedia.org/wiki/Fertility_and_intelligence

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Re:Leaded fuel reduced IQ of children born before 1990 by pedrosorio on Wednesday October 20, 2021 @03:26PM (#28935025)
higher IQ individuals having less children should lead to a decrease of average IQ, whereas the parent cites a reported 3 point increase per decade
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Re:Leaded fuel reduced IQ of children born before 1990 by BatFastard on Wednesday October 20, 2021 @04:17PM (#28935854)
As much as IQ tests want to say they test raw intelligence, education plays a major role in how well you score. And we are better educated as a society than we were 100 years ago.
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Re:Leaded fuel reduced IQ of children born before 1990 by jVinc on Wednesday October 20, 2021 @05:19PM (#28936795)
When looking at IQ increase over time, you control for education and socioeconomic factors, otherwise you're just drawing conclusions from those factors.
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Re:Leaded fuel reduced IQ of children born before 1990 by philosopher1234 on Wednesday October 20, 2021 @07:31PM (#28938233)
How can you control for education when education itself has changed?
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