IQ rates are dropping in many developed countries and that doesn't

Why genetic IQ differences between 'races' are unlikely, Science

We're losing IQ points': the lead poisoning crisis unfolding among US children, Children's health

Study suggests IQ scores in the US have fallen

Pandemic effects may have lowered baby IQs, study says

Does Marijuana Use by Teens Really Cause a Drop in IQ?

Are IQ scores declining in developed countries? - Enigmatic Horizon

Intelligence quotient - Wikipedia

IQ and the Wealth of Nations - Wikipedia

IQ classification - Wikipedia

US public concern grows over role of AI in daily life

Average IQ Levels by Country [OC] : r/dataisbeautiful

Gini Index Explained and Gini Co-efficients Around the World