this post was submitted on 07 Jan 2025
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Roman Empire's use of lead lowered IQ levels across Europe, study finds (www.theguardian.com)
submitted 5 months ago by rssbot@lemmy.bestiver.se to c/hackernews@lemmy.bestiver.se
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[–] witty_username@feddit.nl 5 points 5 months ago

Obligatory mention that IQ is a terrible metric:
"[...] rewards higher than $10 produced [increases] equivalent to more than 20 IQ points, whereas rewards of less than $1 were only one-tenth as effective."
https://www.science.org/content/article/what-does-iq-really-measure