Abstract
In the present study, the effects of average knowledge of results (KR) about a set of trials on the learning of a spatiotemporal movement pattern were examined. Participants (N = 85) practiced 3 movement patterns with the same relative and absolute timing and the same relative amplitudes but with varied absolute amplitudes. Five groups of participants practiced under 1 of the following 5 conditions: KR after every trial (100% KR); average KR after every 3rd trial (average); average KR after every trial about the last 3 trials (running-average); KR after every 3rd trial (33% KR); and KR after every trial; plus average KR after every 3rd trial (both). Although there were no differences between groups in the learning of the fundamental movement pattern (or generalized motor program), average feedback (average, running-average) clearly degraded subjects' ability to learn to properly parameterize the actions in amplitude.
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