Psychological principles in product design — a closer look at Duolingo | by Maria Panagiotidi | Jul, 2021

Maria Panagiotidi
man on a smartphone
Photo by Gilles Lambert on Unsplash

Duration plays a small role in the way we evaluate past negative experiences; such evaluations are often dominated by the discomfort we experience at the worst and at the final moments of episodes.

screenshot from Duolingo; positive interaction
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Duolingo’s streak — 6 more days to go!
examples of chunking in the Duolingo app

“There is an universal tendency among mankind to conceive all beings like themselves . . . We find faces in the moon, armies in the clouds” — Hume (1957)

the evolution of Duo, Duolingo’s mascot

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