Modeling the Difficulty for Centering Rectangles in One and Two Dimensions

Authors:
Robert Pastel
Affiliations:
Computer Science Department, Michigan Technological University, Houghton, Michigan, USA
Venue:
Proceedings of the 13th International Conference on Human-Computer Interaction. Part II: Novel Interaction Methods and Techniques
Year:
2009

Citing 2
Cited 0

Extending Fitts' law to two-dimensional tasks

CHI '92 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

Quantified Score

Hi-index	0.00

Visualization

Abstract

Centering, positioning an object within specified bounds, is a common computer task, for example making selections using a standard mouse or on a touch screen using a finger. These experiments measured times for participants (n = 131) to position a rectangular cursor with various widths, p (10 px ≤ p ≤ 160 px), completely within rectangular targets with various widths, w , and tolerances, t = w-p (4 px ≤ t ≤ 160 px) in one and two dimensions. The analysis divides the movement time into two phases, the transport time and the centering time. Centering times are modeled well by 1/t . All models have high correlation, r 2 *** 0.95.