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A pilot study comparing mouse and mouse-emulating interface devices for graphic input.

E M Kanny1, D K Anson

  • 1Department of Rehabilitation Medicine, University of Washington, Seattle.

Assistive Technology : the Official Journal of RESNA
|December 10, 1990
PubMed
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Adaptive interface devices enable computer access for individuals with physical disabilities. A pilot study found the HeadMaster system nearly as effective as a mouse for graphic input, outperforming the Free Wheel.

Area of Science:

  • Assistive Technology
  • Human-Computer Interaction
  • Rehabilitation Engineering

Background:

  • Adaptive interface devices are crucial for computer access for individuals with physical disabilities.
  • Emerging technologies require assistive interfaces to support both text and graphic input.
  • Headpointing systems are particularly relevant for users with severe physical impairments like high-level quadriplegia.

Purpose of the Study:

  • To compare the graphic input speed of two headpointing systems (HeadMaster and Free Wheel) against a standard mouse.
  • To establish a baseline for future studies involving individuals with severe disabilities.

Main Methods:

  • A pilot study using a single-subject design with six able-bodied participants.
  • Comparison of graphic input performance using the Macintosh computer's mouse, HeadMaster, and Free Wheel systems.

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Main Results:

  • The HeadMaster system demonstrated nearly equivalent effectiveness to the mouse for graphic input.
  • The HeadMaster system significantly outperformed the Free Wheel system in graphic input tasks.

Conclusions:

  • Headpointing systems show promise as effective assistive interfaces for graphic computer input.
  • Further research with improved experimental design is needed to evaluate text input and include users with disabilities.