Psychologically simple motions as geodesic paths. part I. Asymmetric objects
Journal of Mathematical Psychology
Elements of information theory
Elements of information theory
Extending Fitts' law to two-dimensional tasks
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The structure of perceptual categories
Journal of Mathematical Psychology
The Psychology of Human-Computer Interaction
The Psychology of Human-Computer Interaction
Human on-line response to target expansion
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Refining Fitts' law models for bivariate pointing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
International Journal of Human-Computer Studies - Special issue: Fitts law 50 years later: Applications and contributions from human-computer interaction
A probabilistic approach to modeling two-dimensional pointing
ACM Transactions on Computer-Human Interaction (TOCHI)
Fitts' law and expanding targets: Experimental studies and designs for user interfaces
ACM Transactions on Computer-Human Interaction (TOCHI)
Arm trajectory modifications during reaching towards visual targets
Journal of Cognitive Neuroscience
Evaluation of pointing performance on screen edges
AVI '08 Proceedings of the working conference on Advanced visual interfaces
Fitts' law as a research and design tool in human-computer interaction
Human-Computer Interaction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Extending Fitts' law to account for the effects of movement direction on 2d pointing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Extending Fitts' law to more than one dimension has been recognized as having important implications for HCI. In spite of the progress made over the years, however, it is still far from a resolved issue. Our work approaches this problem from the viewpoint of a configuration space, which has served as a useful conceptual framework for understanding human preference in perception. Notably, human are found to be biased towards regular configurations. In this work, we extended the configuration space framework to the domain of motor behavior, analyzed 2D pointing, and developed five models to account for the performance. An extensive experiment was conducted to measure the fit of the derived models and that of three previous models. Consistent with our hypothesis, the model reflecting a bias towards regular configuration was found to have the most satisfactory fit with the data. The paper concludes with discussions on improving understanding of Fitts' law and the implications for HCI.