Evidence for an Error Detection Mechanism In Motor Skills
- 1 September 1972
- journal article
- research article
- Published by Informa UK Limited in Journal of Motor Behavior
- Vol. 4 (3), 143-153
- https://doi.org/10.1080/00222895.1972.10734930
Abstract
One of the fundamental predictions of the Adams (1971) closed-loop theory is that S should develop over practice a perceptual trace which forms the basis of an error detection mechanism. If knowledge of results (KR) is withdrawn, S can use the error detection mechanism to guide performance in its place. To test this notion, 10 Ss practiced 170 trials of a discrete ballistic response, attempting to produce a 9.5-in. manual slider movement in exactly 150 msec., with KR present except on Trials 11-20 and 141-170. There was an increasing correspondence between the actual errors and Ss’ estimation of them as practice continued, and ratings of confidence increased, both of which were indicative of a developing error detection mechanism. During KR withdrawal trials, Ss displayed no worsening of performance, and even continued to learn slightly, suggesting that the error detection mechanism acted as a substitute for KR. The results generally supported Adams’ theory.Keywords
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