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Is there any value in a post user testing questionnaire considering the sample sizes being small?
I worked at company that after user testing sessions got users to complete a post testing questionnaire. The questionnaire tended to ask user for an NPS score, answer SUS (usability) questions and the ...
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Does using part of a usability questionnaire diminish its validity?
I'm interested in using QUIS (http://garyperlman.com/quest/quest.cgi) but the questions about system capabilities are irrelevant for my purposes as well as the questions about screens. I'm primarily ...
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