Effects of feedback on eye typing with a short dwell time

  • Authors:
  • Päivi Majaranta;Anne Aula;Kari-Jouko Räihä

  • Affiliations:
  • Human-Computer Interaction Unit (TAUCHI), Department of Computer Sciences, FIN-33014 University of Tampere, Finland;Human-Computer Interaction Unit (TAUCHI), Department of Computer Sciences, FIN-33014 University of Tampere, Finland;Human-Computer Interaction Unit (TAUCHI), Department of Computer Sciences, FIN-33014 University of Tampere, Finland

  • Venue:
  • Proceedings of the 2004 symposium on Eye tracking research & applications
  • Year:
  • 2004

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Abstract

Eye typing provides means of communication especially for people with severe disabilities. Recent research indicates that the type of feedback impacts typing speed, error rate, and the user's need to switch her gaze between the on-screen keyboard and the typed text field. The current study focuses on the issues of feedback when a short dwell time (450 ms vs. 900 ms in a previous study) is used. Results show that the findings obtained using longer dwell times only partly apply for shorter dwell times. For example, with a short dwell time, spoken feedback results in slower text entry speed and double entry errors. A short dwell time requires sharp and clear feedback that supports the typing rhythm.