When to Use Which User-Experience Research Methods
To better understand when to use which user research method, Christian introduced a framework along 3 dimensions: 1) Attitudinal vs. Behavioral, 2) Qualitative vs.
How Many Participants are Really Enough for Usability Studies?
[Sciencific read] There is a lot of discussion going on if 5 respondents is enough for a usability test or not. This scientific study discusses all arguments and sets up an experiments to find the optimal number of respondents.
A Stakeholder Interview Checklist
Kim created a useful cheat sheet with questions to ask different type of stakeholders when preparing a study.
How Many Test Users in a Usability Study?
Jacob Nielsen argues that it is best to invite 5 participants in a usability test. This number has the biggest ROI.
Questions to ask before starting user research
In order to prepare your research Michael created a list of questions to discuss with stakeholders. What questions do you ask?
Why you only need to test with five users (explained)
There is and has been a lot of debate about the magical number of five users for usability testing. Jeff explains the discussion from a statistical perspective.