it's hard to separate IQ decreasing and return to mean with IQ stabilizing
replyin 20th century most of the world moved past famine and toxins - did any factor of similar scale happen in 21st century as well to start looking for opposite processes?
Generally that statistic refers to populations in isolation, not the entire world in aggregate.
replyIt is fairly well agreed upon that American kids across the nation are currently testing lower than they were in 2010.
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