Fitts' throughput and the speed-accuracy tradeoff

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Fitts' throughput and the speed-accuracy tradeoff

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Conference on Human Factors in Computing Systems archive
Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems table of contents

Florence, Italy

SESSION: Fitt's Law Lives table of contents

Pages 1633-1636

Year of Publication: 2008

ISBN:978-1-60558-011-1

Authors

I. Scott MacKenzie	York University, Toronto, ON, Canada
Poika Isokoski	University of Tampere, Tampere, Finland

Sponsors

ACM: Association for Computing Machinery
SIGCHI: ACM Special Interest Group on Computer-Human Interaction

Publisher

ACM New York, NY, USA

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Downloads (6 Weeks): 21, Downloads (12 Months): 119, Citation Count: 1

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ABSTRACT

We describe an experiment to test the hypothesis that Fitts' throughput is independent of the speed-accuracy tradeoff. Eighteen participants used a mouse in performing a total of 5,400 target selection trials. Comparing nominal, speed-emphasis, and accuracy-emphasis conditions, significant main effects were found on movement time (ms) and error rate (%), but not on throughput (bits/s). In the latter case, failure to reject the null hypothesis of "no significant difference" (i.e., .05 < p < 1) is viewed as evidence supporting the constant-throughput hypothesis.

REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	Fitts, P. M. and Radford, B. K., Information capacity of discrete motor responses under different cognitive sets, J Exp Psych, 71, 1966, 475--482.
	2	Kantowitz, B. H. and Sorkin, R. D., Human factors: Understanding people-system relationships. New York: Wiley, 1983.
	3	MacKenzie, I. S., Fitts' law as a research and design tool in human-computer interaction, Human-Computer Interaction, 7, 1992, 91--139.
	4	R. William Soukoreff , I. Scott MacKenzie, Towards a standard for pointing device evaluation, perspectives on 27 years of Fitts' law research in HCI, International Journal of Human-Computer Studies, v.61 n.6, p.751-789, December 2004 [doi>10.1016/j.ijhcs.2004.09.001]
	5	Shumin Zhai, Characterizing computer input with Fitts' law parameters: the information and non-information aspects of pointing, International Journal of Human-Computer Studies, v.61 n.6, p.791-809, December 2004 [doi>10.1016/j.ijhcs.2004.09.006]