Knowledge of results and children's motor learning.

In 2 experiments the hypothesis that the optimum precision level of knowledge of results (KR) for motor learning varies as a direct function of age was tested. 480 1st, 3rd, 5th, and 9th graders performed a series of trials on a simple linear positioning task under a variety of KR precision levels. Results show that level of motor performance achieved was a direct function of age. A curvilinear relationship between KR and age was obtained whereby very imprecise and precise levels of KR produced a poorer performance and the optimum level of KR became more precise with age. Results support the view that information-processing capacity improves with developmental age in motor learning. (10 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)