ASIST AM 03 2003 START ConferenceManager    

Perceptions and Effects of a Systemís Usability by Experience Level

Mike Alexander, School of Information, University of Texas at Austin Hsin-liang Chen, School of Information, University of Texas at Austin

Presented at ASIST 2003 Annual Meeting -- Humanizing Information Technology: From Ideas to Bits and Back (ASIST AM 03 2003), Westin Long Beach, Long Beach, California, October 20 - 23, 2003


This study compared usersí perceived and practical usability problems within a Web-based information system, based on their experiences with the system. Eighteen employees of a company which created the system were chosen to represent typical end-users. Each participant was asked to complete a specific list of tasks within the system, after which he or she answered several questions regarding the systemís usability. While advanced users generally completed the tasks in less time than novices, the number of tasks completed correctly and the number of usability problems reported did not differ significantly by experience level. Problems identified by the participants reflected accepted usability guidelines, suggesting that, by following user-centered design principles, such problems can be avoided in future development efforts.

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