Researchers find a country's wealth correlates with its collective knowledge

(PhysOrg.com) -- What causes the large gap between rich and poor countries has been a long-debated question. Previous research has found some correlation between a nation’s economic prosperity and factors such as how the country is governed, the average amount of formal education each individual receives, and the country's overall competiveness. But now a team of researchers from Harvard and MIT has discovered that a new measure based on a country's collective knowledge can account for the enormous income differences between the nations of the world better than any other factor.

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