20 user-research methods: where they fit in the design process, whether they are attitudinal or behavioral, qualitative or quantitative, and their context of use.| Nielsen Norman Group
Learn to plan, conduct, and analyze your own user testing studies, whether in person or remote.| Nielsen Norman Group
3 methods for increasing UX quality by exploring and testing diverse design ideas work even better when you use them together.| Nielsen Norman Group
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.| Nielsen Norman Group
When collecting usability metrics, testing with 20 users typically offers a reasonably tight confidence interval.| Nielsen Norman Group
User research can be done at any point in the design cycle. This list of methods and activities can help you decide which to use when.| Nielsen Norman Group