The human race is pretty smart. We’ve come up with nuclear fission, space travel and a quick vaccine for Covid-19. But what else can we say about the smartest people?

Can the IQ of a Nation Predict Economic Results?

Yes. The average IQ of a country’s citizens correlates with the strength of its economy and with its economic prospects. The national average intelligence scores, right, were calculated by Richard Lynn, a British psychologist, and Tatu Vanhanen, a Finnish political scientist. In the last decade, they analyzed IQ studies from 113 countries.

The scores met with criticism from the academic community, as summarized by Juri Allik, professor of psychology at the University of Tartu. “By analogy with many previous...

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