Economists lauds impact of rising IQ scores (Flynn Effect) on nations' prosperity - no mention of recent declines. http://www.amazon.com/Hive-Mind-Your-Nation%C2%92s-Matters/dp/0804785961/ref=sr_1_1?s=books&ie=UTF8&qid=1448007853&sr=1-1&keywords=hive+mind …
Replying to @GarettJones
@GarettJones Now we know they can also decline again.pic.twitter.com/v75nOI1HRy
7:39 AM - 20 Nov 2015
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