Modeling the difficulty for centering rectangles in one and two dimensions

Document Type

Conference Proceeding

Publication Date

2009

Department

Department of Computer Science

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.

Publication Title

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

ISBN

978-3-642-02577-8

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