Proposal of two-dimensional effective target width in Fitts' Law

Atsuo Murata, Hirokazu Iwase

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

This research was designed to develop the definition of effective target width in a two-dimensional pointing task. The idea of effective target width in a one-dimensional pointing task was extended to effective target width in a two-dimensional pointing task using the two-dimensional joint probability density function. The validity of this theoretical definition was empirically verified. In the experiment, the moving direction of the mouse was from lower left to upper right. The approach angle was fixed to 45°. The fit of conventional and new models to the experimental data was compared by means of contribution of the regression line which showed the relationship between the index of difficulty and the mean pointing time. As a result, we could obtain higher values of contribution for the modelling that introduced effective target width than that for the conventional modelling without it. In conclusion, the proposed two-dimensional definition of effective target width may be promising for predicting and modelling pointing time in human-computer interactions.

Original languageEnglish
Pages (from-to)II-265 - II-270
JournalProceedings of the IEEE International Conference on Systems, Man and Cybernetics
Volume2
Publication statusPublished - Dec 1 1999
Externally publishedYes
Event1999 IEEE International Conference on Systems, Man, and Cybernetics 'Human Communication and Cybernetics' - Tokyo, Jpn
Duration: Oct 12 1999Oct 15 1999

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Hardware and Architecture

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