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Beyond the Usability Lab by Donna Tedesco, Thomas Tullis, William Albert

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2.4.1 Task-based data

Online usability studies involve some kind of user tasks. People are actually trying to do something on the site as opposed to just looking at it. What they're trying to do might be something they decided for themselves or it might be something that you asked them to do. There might be just one task or many tasks. There are several forms of task-based data.

Task success (also known as task completion)

With any tasks, perhaps the single most important piece of information is whether the participants were able to accomplish them, which can often be determined by whether they got the “right” answer or may even be self-identified by the user (“I found it”/“I didn't find it”). But in some cases, there may be shades of gray ...

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