The Impact of Concept Map Visualizations on the Information Behavior, Perceptions of Performance, Learning and Use with Novices in the Information Retrieval Context A Thesis

نویسندگان

  • Jodi Christine Williams
  • Jodi C. Williams
  • George E. Williams
  • Michael Atwood
  • Xia Lin
  • Scott Robertson
چکیده

The Impact of Concept Map Visualizations on the Information Behavior, Perceptions of Performance, Learning and Use with Novices in the Information Retrieval Context Jodi C. Williams Michael Atwood, Ph.D. In examining undergraduate students in the information retrieval environment for the impact of computer generated concept maps, two primary research questions were considered: 1) what is the impact of display type on the novice searcher’s information behavior; and 2) what is the impact of different display types on the user’s perceptions of performance, knowledge and overall use of the system. Sixty participants in this experiment were given hypothetical information needs on two different medical topics (cholesterol, depression). Participants’ explored one of three interactive visualization displays using these medical topics, answered a preand post-test instrument and then completed a final questionnaire on their perceptions of the displays. Different types of inferential statistical tests were used to examine the research questions. When appropriate, factorial ANOVAs, mixed between-within ANOVAs, and chi square tests of independence were conducted. Five main findings resulted from this research: 1) for all display types (LIST, SOM, PFNET) there is an increase in the number of participant search terms and in the incorporation of MeSH terminology from the visualizations following exposure to those displays; 2) there is a relationship between the display type and the interface level from which PFNET participants chose terms; 3) searchers’ feelings of confidence, satisfaction,

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تاریخ انتشار 2007