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This study explores the effect of task difficulty on search behavior changes for users with high and low domain knowledge. A user experiment (n=40) was conducted using 5 search tasks. Participants rated their knowledge of MeSH terms (n=409) and were divided into two domain knowledge levels. Three of the tasks were designed to be difficult tasks with very few relevant documents returned by our search...
Self‐assessment of topic/task knowledge is a human metacognitive capacity that impacts information behavior, for example through selection of learning and search strategies. It is often used as a measure in experiments for evaluation of results and those measurements are taken to be generally reliable. We conducted a user study (n=40) to test this by constructing a concept‐based topic knowledge representation...
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