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Beginners need a week to test a site with users.
With experience, you can do it in 2 days.Baseline given for your own usability studies, to help you get a feeling for how your tests are going:
- the average site has 11 usability catastrophes on average
- users are only able to complete 42% of the test tasks
- users' average subjective rating of websites is 4.9 on a 1-7 scale
Do user testing to find site-level usability problems and do heuristic evaluation for page-level improvements.
Alertbox, May 3, 1998, by Jakob Nielsen.
Added/Updated: May 5, 1998
