Spanish is the world's happiest language

February 10, 2015 8:08 PM

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Scientists say the mostly positive tendency of language suggests human evolution has favored words that promote social cohesion.

The study, carried out by researchers at the University of Vermont's Computational Story Lab, located the 100,000 of the most frequently used words -- uttered and written on Twitter and TV, in song lyrics, the New York Times and movie titles -- across the world's 10 most popular languages.

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