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Muller, Hermann; Frank, Till D.; Sternad, Dagmar – Journal of Experimental Psychology: Human Perception and Performance, 2007
In their comment on the tolerance-noise covariation (TNC) method for decomposing variability by H. Muller and D. Sternad (2003, 2004b), J. B. J. Smeets and S. Louw show that covariation (C), as defined within the TNC method, is not invariant with respect to coordinate transformations and contend that it is, therefore, meaningless. Although the…
Descriptors: Statistical Analysis, Psychomotor Skills, Skill Development, Criticism
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Smeets, Jeroen B. J.; Louw, Stefan – Journal of Experimental Psychology: Human Perception and Performance, 2007
It has been proposed that it is possible to decompose changes in variability of human motor behavior into 3 independent components: covariation, task tolerance, and stochastic noise. The authors simulate learning to throw accurately and show that for this task the proposed analysis does not give an unambiguous answer to the question of what the 3…
Descriptors: Motor Development, Psychomotor Skills, Simulation, Statistical Analysis