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Usability Assessment of Academic Digital Libraries

2. What is Usability?. A multidimensional constructInterface effectiveness, usefulness, usableness, ease of use, fit for use, effectiveness, efficiency, satisfaction, learnability, memorability, error tolerant, understandability, appropriate level of interaction, control, helpfulness, adaptability,

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Usability Assessment of Academic Digital Libraries

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    1. Usability Assessment of Academic Digital Libraries Judy Jeng Library Assessment Conference September 25-27, 2006

    2. 2 What is Usability? A multidimensional construct Interface effectiveness, usefulness, usableness, ease of use, fit for use, effectiveness, efficiency, satisfaction, learnability, memorability, error tolerant, understandability, appropriate level of interaction, control, helpfulness, adaptability, the quality of being engaging, and flexibility User focus

    3. 3 Techniques of Usability Evaluation Formal usability testing Usability inspection Heuristic evaluation Card sort Category membership expectation Cognitive walkthrough Claims analysis CASSM Focus groups Questionnaires Think aloud Analysis of site usage logs Paper prototyping Field study

    4. 4 What have been studied? Design Structure Interface Navigation Functionality Utility Breadth of coverage Metadata appropriateness Awareness of library resources Terminology

    5. 5 Major Usability Problems in Digital Libraries User lostness The study of ACM Digital Library, the Networked Computer Science Technical Reference Library, and the New Zealand Digital Library found that 73% of the subjects experienced different degrees of lostness Alexandria Digital Library also report this problem Navigation disorientation is among the biggest frustrations for Web users

    6. 6 Lack of Benchmarks MIT Libraries had 75% success rate. Is this high or low? University of the Pacific and University of Illinois at Chicago also report their performance data. We need more performance data to compare

    7. 7 Ambiguity of terminology and the need for better labeling Library Web sites are designed from a librarians perspective When users do not find something in the online catalog, they immediately conclude that the library does not own the item

    8. 8 Usability Evaluation Model

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