Reading of electronic documents: the usability of linear, fisheye, and overview+detail interfaces

  • Authors:
  • Kasper Hornbæk;Erik Frøkjær

  • Affiliations:
  • Department of Computing, University of Copenhagen, Copenhagen East, Denmark;Datalogi, Roskilde Universitetscenter, Roskilde, Denmark

  • Venue:
  • Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
  • Year:
  • 2001

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Abstract

Reading of electronic documents is becoming increasingly important as more information is disseminated electronically. We present an experiment that compares the usability of a linear, a fisheye, and an overview+detail interface for electronic documents. Using these interfaces, 20 subjects wrote essays and answered questions about scientific documents. Essays written using the overview+detail interface received higher grades, while subjects using the fisheye interface read documents faster. However, subjects used more time to answer questions with the overview+detail interface. All but one subject preferred the overview+detail interface. The most common interface in practical use, the linear interface, is found to be inferior to the fisheye and overview+detail interfaces regarding most aspects of usability. We recommend using overview+detail interfaces for electronic documents, while fisheye interfaces mainly should be considered for time-critical tasks.