Usability Assessment of Academic Digital Libraries: Effectiveness, Efficiency, Satisfaction, and Learnability

This study is to develop and evaluate methods and instruments for assessing the usability of digital libraries. It discusses the dimensions of usability, what methods have been applied in evaluating usability of digital libraries, their applicability, and criteria. It is found in the study that there exists an interlocking relationship among effectiveness, efficiency, and satisfaction. It provides operational criteria for effectiveness, efficiency, satisfaction, and learnability. It discovers users' criteria on “ease of use,” “organization of information,” “terminology and labeling,” “visual attractiveness,” and “mistake recovery.” Common causes of “user lostness” were found. “Click cost” was examined.