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The optic trajectory is not a lot of use if you want to catch the ball

By Peter McLeod, Nick Reed and Zoltan Dienes

Abstract

According to linear optic trajectory (LOT) theory, fielders use the direction of curvature of the optic trajectory to control the way they run to intercept the ball. Data presented by D. M. Shaffer and M. K. McBeath (2002) as support for LOT theory show that the optic trajectory of balls that will fall behind the fielder provide the cue that LOT theory predicts would send the fielder running forward, not backward. In this article, the authors show that watching these balls would provide the fielder with the cue that the optic acceleration cancellation (OAC) theory of interception predicts would send the fielder running backward. It appears that the fielders studied by Shaffer and McBeath were following the cue predicted by OAC theory, not that predicted by LOT theory

Publisher: American Psychological Association
Year: 2002
DOI identifier: 10.1037/0096-1523.28.6.1499
OAI identifier: oai:sro.sussex.ac.uk:14225
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