User Research and Testing: How many users?

User Research Techniques

  • Card sorting
  • Tree testing
  • First-click test
  • Usability testing
  • Lostness metric
  • Interviewing
  • Diary study
  • Experience Sampling

So, how many users?

Card sorting

Tree testing/First-Click Testing

Usability Testing/Lostness Metric

Interviewing

Diary Study

Experience Sampling

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