Usability Testing with 5 Users: Design Process (video 1 of 3)

Summary: Formative usability testing is best done with a small number of study participants, so that you have time and budget to test more design iterations of the user interface.

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Usability Testing with 5 Users: Design Process (video 1 of 3)

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Why You Only Need to Test with 5 Users

Elaborate usability tests are a waste of resources. The best results come from testing no more than 5 users and running as many small tests as you can afford.

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Jakob Nielsen, Ph.D., is a retired principal and co-founder (with Dr. Donald A. Norman) of the Nielsen Norman Group. Jakob established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and invented the heuristic evaluation method.

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