Power Law of Learning: How to Launch New Designs Successfully

Summary: Time on task decreases with the number of times the task has been performed in the past. As a result, a new version of an app translates into a temporary productivity loss for its users.

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Power Law of Learning: How to Launch New Designs Successfully

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Across many tasks, learning curves show an initial learning period, followed by a plateau of optimal efficiency. New interfaces compete with much practiced, old ones that have already reached this plateau.

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Raluca Budiu is Senior Director, Data Strategy, at Nielsen Norman Group, where she uses her data-analysis expertise to drive strategic decisions. She also serves as editor for the articles published on NNgroup.com. Raluca has coauthored many NN/g reports, as well as the book Mobile Usability. She holds a Ph.D. from Carnegie Mellon University.

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