It started with an innocent query to the IxDA listserv . Someone was sure they had read an article in interactions magazine once but could not find it again: "Wasn't there something written sometime by someone about something like sample size in usability research?" asked an expectant interaction designer. Woe is the hapless interaction designer who is unprepared for the firestorm that follows the dreaded "sample size" question. Some 106 replies later, not only was the question clearly left unanswered, but worse, it also left many scratching their heads in genuine confusion. What is the essence of interaction design…
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