... analysis tools and models. Information retrieval Empirical study Task-based information searching RQ2. Trails and task complexity: How are the trail types distributed across work task complexity? Traditionally, much of information retrieval (IR) research focuses on a single multi...

.... The results of the empirical studies show that there is a close connection between the students’ problem stages (mental model) in the task performance and the information sought, the search tactics used and the assessment of the relevance and utility of the information found. The corroborated hypotheses...