Characterizing computer input with Fitts' law parameters-the information and non-information aspects of pointing

@article{Zhai2004CharacterizingCI,
  title={Characterizing computer input with Fitts' law parameters-the information and non-information aspects of pointing},
  author={Shumin Zhai},
  journal={Int. J. Hum. Comput. Stud.},
  year={2004},
  volume={61},
  pages={791-809}
}
  • Shumin Zhai
  • Published 2004
  • Mathematics, Computer Science
  • Int. J. Hum. Comput. Stud.
Throughput (TP), also known as index of performance or bandwidth in Fitts' law tasks, has been a fundamental metric in quantifying input system performance. The operational definition of TP is varied in the literature. In part thanks to the common interpretations of International Standard ISO 9241-9, the "Ergonomic requirements for office work with visual display terminals-- Part 9: Requirements for non-keyboard input devices", the measurements of throughput have increasingly converged onto the… Expand
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This study investigates the nature and the relationship of the two layers of speed-accuracy tradeoff by systematically controlling both Id and the index of target utilization Iu in a set of four experiments, and shows the complex interaction effect between Id and Iu, suggesting that a simple and complete model accommodating both layers ofSpeed-acc accuracy tradeoff may not exist. Expand
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