Online tests suggest IQ scores in US dropped for the first time in nearly a century

submitted by Alphix from phys.org

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[–]Alphix[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

I know what it MEANS. I just disagree, but if you will convince me that it is the MAIN one, then please share evidence.

[–]William_World 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

just one factor so settle down