TechCrunch

Education is quickly moving online, but we haven’t seen all that many studies that actually look into the effectiveness of these new forms of online learning. To see how its program performed, the language learning service Duolingo, founded by CAPTCHA inventor Luis von Ahn, commissioned a study (PDF) into the effectiveness of its program. The result, which even surprised von Ahn: it only takes a Duolingo user 34 hours to learn the equivalent of a first college semester’s worth of Spanish.

A similar study by the same researchers who conducted Duolingo’s study, by the way, found that it took Rosetta Stone users between 55 and 60 hours to learn the same amount of material.

These studies were conducted by Roumen Vesselinov, a Visiting Assistant Professor at Queens College, City University of New York, and John Grego, Professor and Chair of the Statistics Department and the University of…

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