Usability testing and other UX evaluation methods can be divided into two major categories: formative evaluation and summative evaluation. Both have their place, but at different stages in the design lifecycle, and they have different characteristics, for example in the number of test participants needed for a good study.
#UX #usability #researchmethods #usertesting
Full-day course on Usability Testing methodology: https://www.nngroup.com/courses/usability-testing/
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