A Cognitive Task Analysis Approach for Usability Evaluation of Digital Libraries

This chapter focuses on the usability evaluation of Digital Libraries (DL). The research literature in this area is reviewed. The strengths and weaknesses of the traditional evaluation techniques are discussed. A Cognitive Task Analysis (CTA) approach is proposed based on its applicability for the iterative and formative usability evaluation of digital libraries. The theoretical framework and features of CTA are explained. The advantages of the proposed approach for the usability evaluation of digital libraries are elucidated and the procedure of carrying out this type of evaluation is detailed. Future directions for DL usability evaluation, especially for the purpose of iterative design process, are recommended.