Optimization in manual aiming: relating inherent variability and target size, and its influence on tendency

Roberts, JW, Elliott, D and Burkitt, J (2021) Optimization in manual aiming: relating inherent variability and target size, and its influence on tendency. Journal of Motor Behavior. ISSN 0022-2895

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Abstract

For manual aiming, the optimized submovement model predicts a tendency toward target-centre of primary movement endpoints (probabilistic strategy) (Meyer et al., 1988), while the minimization model predicts target undershooting (“play-it-safe” strategy) (Elliott et al., 2004). The spatial variability of primary movement endpoints directed toward a cross-hair (400-500 ms) (Session 1) were scaled by a multiplicative factor (x1-4) to form circular targets of different sizes (Session 2). In recognition of both models, it was predicted that the more that inherent variability exceeded the target size, the greater the tendency to shift from target-centre aiming to target undershooting. The central tendency of primary movement endpoints was not influenced by the targets, while it neared target-centre. These findings concur with a probabilistic strategy, although we speculate on factors that might otherwise foster a “play-it-safe” strategy.

Item Type:	Article
Uncontrolled Keywords:	1106 Human Movement and Sports Sciences, 1702 Cognitive Sciences
Subjects:	R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions:	Sport and Exercise Sciences
Publisher:	Taylor & Francis (Routledge)
Date of acceptance:	6 December 2021
Date of first compliant Open Access:	14 December 2022
Date Deposited:	07 Dec 2021 13:15
Last Modified:	14 Dec 2022 00:50
DOI or ID number:	10.1080/00222895.2021.2016574
URI:	https://researchonline.ljmu.ac.uk/id/eprint/15895

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