Auflistung nach Schlagwort "time on task"
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- muc: kurzbeitrag (poster)Task descriptions in usability tests: A source of split-attention(Mensch & Computer 2013: Interaktive Vielfalt, 2013) Hollender, Nina; Li, Yiqi; Held, TheoHaving to switch between task descriptions and the interface during a usability test induces cognitive load for participants and increases time on task. An explorative study is reported, showing a large individual variability in how often and for how long participants returned to task descriptions. They returned to descriptions at least once in 80% of all cases (Max=13, Median=2), spending up to 147s re-reading the description (Median=7s). This constituted up to 67% of the total time on task. Practical implications regarding the design of task descriptions and for summative usability testing are sketched.