Considerations of Efficiency and Mental Stress of Search Tasks on Websites by Blind Persons

  • Authors:

  • Junichi Iizuka;Akira Okamoto;Yasuo Horiuchi;Akira Ichikawa

  • Affiliations:

  • Tsukuba University of Technology, Tsukuba City, Japan 305-8520;Tsukuba University of Technology, Tsukuba City, Japan 305-8520;Chiba University, Chiba City, Japan 263-8522;Waseda University, Tokorozawa City, Japan 359-1192

  • Venue:
  • UAHCI '09 Proceedings of the 5th International Conference on Universal Access in Human-Computer Interaction. Part III: Applications and Services
  • Year:
  • 2009

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Abstract

We examined what kind of rating index was usable for verification of usability of websites for blind persons. The search time had a strong correlation with the NASA-TLX WWL scores. This would suggest a possibility to evaluate the usability by the search time. On the other hand, in respect of the accessibility check tool, its verification result had no correlation with NASA-TLX WWL scores, so it could not be used as a tool for verification of usability. We must develop a new usability check tool for blind persons. If we place functions with high usage frequency and high level of importance at a top of the website where a user can easily recognize them, it not only gives us a high level of visibility but also is effective for a blind person using voice output web browser as well.