Research Output
Movement time for motion-impaired users assisted by force-feedback: effects of movement amplitude, target width, and gravity well width
  This paper presents a study investigating how the performance of motion-impaired computer users in ?point and click? tasks varies with target distance (A), target width (W), and force-feedback gravity well width (GWW). Six motion-impaired users performed ?point and click? tasks across a range of values for A, W, and GWW. Times were observed to increase with A, and to decrease with W. Times also improved with GWW, and, with the addition of a gravity well, a greater improvement was observed for smaller targets than for bigger ones. It was found that Fitts? Law gave a good description of behaviour for each value of GWW, and that gravity wells reduced the effect of task difficulty on performance. A model based on Fitts? Law is proposed, which incorporates the effect of GWW on movement time. The model accounts for 88.8% of the variance in the observed data.

  • Type:

    Article

  • Date:

    06 September 2005

  • Publication Status:

    Published

  • Publisher

    Springer-Verlag

  • DOI:

    10.1007/S10209-005-0114-5

  • Cross Ref:

    114

  • ISSN:

    1615-5289

  • Library of Congress:

    T Technology

  • Dewey Decimal Classification:

    600 Technology

  • Funders:

    Engineering and Physical Sciences Research Council

Citation

Hwang, F., Keates, S., Langdon, P., & Clarkson, P. J. (2005). Movement time for motion-impaired users assisted by force-feedback: effects of movement amplitude, target width, and gravity well width. Universal Access in the Information Society, 4, 85-95. https://doi.org/10.1007/S10209-005-0114-5

Authors

Keywords

movement time, motion impaired users assisted by force-feedback, movement amplitude, target width, gravity well width

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