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A comment on Lead exposure in last century shrunk IQ scores of half of Americans: study.

Re:Lead exposure in last century shrunk IQ scores of half of... by yalogin on Tuesday March 08, 2022 @07:07PM (#30609198)
Is IQ really quantifiable and measurable and is it comparable across different people, different geographies and races? I didn’t think it was, may be I am wrong. How is IQ even defined?
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Re:Lead exposure in last century shrunk IQ scores of half of... by krustymeathead on Tuesday March 08, 2022 @08:02PM (#30609711)
There is a great Radiolab series about this: G. The IQ test is an effort to measure "general intelligence", or "G", but the test has had biases over time with regard to race.

The landmark study by Herb Needleman on the link between lead exposure and IQ only studied white children to reduce any doubts about the validity of its claims [1].

[1] https://www.wnycstudios.org/podcasts/radiolab/articles/g-pro...

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Re:Lead exposure in last century shrunk IQ scores of half of... by extant_lifeform on Tuesday March 08, 2022 @08:35PM (#30609992)
https://en.wikipedia.org/wiki/G_factor_(psychometrics)
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