Two quantitative measures of skill development.

Abstract
Used a model-matching technique to derive estimates of 2 parameters, system gain and effective time delay, of a differential-equation model for the tracking behavior of 30 male 4th, 7th, and 10th graders. These parameters appeared to provide more analytic insight into ss' performance than did tracking error scores alone. Results suggest that differences in time delay represent maturational effects while system gain is sensitive to more individualistic properties of ss' behavior. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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