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The delta-lambda model: “Yes” for simple movement trajectories; “no” for speed/accuracy tradeoffs

Published online by Cambridge University Press:  30 August 2019

Charles E. Wright  and
David E. Meyer
Charles E. Wright
Affiliation:
Department of Cognitive Science, University of California, Irvine, CA 92697-5100 cewright@uci.eduwww.socsci.uci.edu/cogsci
David E. Meyer
Affiliation:
Department of Psychology, University of Michigan, Ann Arbor, MI 48109-1109 demeyer@umich.edu
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Abstract

Although it provides a useful description of elementary movement trajectories, we argue that the delta-lognormal model is deficient as an account of speed/accuracy tradeoffs in aimed movements. It fails in this regard because (1) it is deterministic, (2) its formulation ignores critical task elements, and (3) it fails to account for the corrective role of submovements.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 20 , Issue 2 , June 1997 , pp. 324
Copyright
1997 Cambridge University Press

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