Content-type: text/html Downes.ca ~ Stephen's Web ~ Testing Web Sites: Five Users Is Nowhere Near EnoughCRLF

Stephen Downes

Knowledge, Learning, Community
This short, sharp paper refutes arguments advanced by Jakob Nielsen and Robert Virzi to the effect that only five users are needed to conduct an effective usability test. According to the authors, only 35 percent of the usability problems were identified by the first five users, suggesting that many more users would need to be tested to identify a majority of the usability problems. PDF file.

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Stephen Downes Stephen Downes, Casselman, Canada
stephen@downes.ca

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Last Updated: Nov 04, 2024 1:15 p.m.

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