title: Learning to optimize speed, accuracy, and energy expenditure: a framework for understanding speed-accuracy relations in goal-directed aiming.
abstract: Over the last century, investigators have developed a number of models to explain the relation between speed and accuracy in target-directed manual aiming. The models vary in the extent to which they stress the importance of feedforward processes and the online use of sensory information (see D. Elliott, W. F. Helsen, & R. Chua, 2001, for a recent review). A common feature of those models is that the role of practice in optimizing speed, accuracy, and energy expenditure in goal-directed aiming is either ignored or minimized. The authors present a theoretical framework for understanding speed-accuracy tradeoffs that takes into account the strategic, trial-to-trial behavior of the performer. The strategic behavior enables individuals to maximize movement speed while minimizing error and energy expenditure.
authors.affiliation: Department of Kinesiology, McMaster University, Canada. Elliott@mcmaster.ca
authors.forename: Digby
authors.initials: D
authors.lastname: Elliott
authors.forename: Steven
authors.initials: S
authors.lastname: Hansen
authors.forename: Jocelyn
authors.initials: J
authors.lastname: Mendoza
authors.forename: Luc
authors.initials: L
authors.lastname: Tremblay
mesh_terms: D003071:Cognition; D004734:Energy Metabolism; D006040:Goals; D006801:Humans; D007858:Learning; D009068:Movement