Fitts' law for older adults: considering a factor of age

Authors:
Maxim Bakaev
Affiliations:
Novosibirsk State Technical University, Novosibirsk, Russia
Venue:
Proceedings of the VIII Brazilian Symposium on Human Factors in Computing Systems
Year:
2008

Citing 3
Cited 0

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Abstract

The paper describes an experiment investigating older adults' ability to make rapid aimed movements with a computer mouse. Fitts' law was found to be applicable, but had R2 lower than for younger subjects. On average, it took elder participants twice as much time to complete movement tasks, but their accuracy was two times higher. Error level was affected by small (8 pixels) target size, but not by movement distance. Mean throughput was 4.58, but only 3.29 for senior subjects. Extended regression models, incorporating factors of subjects' age and experience, were proposed for movement time and throughput, providing a useful insight for HCI researchers and interface designers.