News for hackers. Stuff that matters.

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

Re:Lead exposure in last century shrunk IQ scores of half of... by paulpauper on Tuesday March 08, 2022 @11:24AM (#30601706)
a meta study showed the effect to be minimal to zero

https://greyenlightenment.com/2021/08/02/the-effects-of-lead...

[ Parent | on HN ]
Re:Lead exposure in last century shrunk IQ scores of half of... by scythe on Tuesday March 08, 2022 @11:44AM (#30602027)
That's focused on crime, not IQ/cognition. Crime is not a purely mental phenomenon, so it would likely have a weaker correlation with lead even if the effect is real. The blog post does try to dissemble on the IQ question, but the only evidence presented shows a significant effect of lead (contra the blogger's thesis).
[ Parent | on HN ]