In my previous study (Tani, 1981) related to the effect of error-restriction emphasis instruction on two-hand coordination learning, it was found that such instruction tended to have a greater effect in the earlier stages of the learning process. The purpose of this study was to investigate the effect of this same instruction on adaptive process of two-hand coordination learning. Twelve undergraduate female students, unfamiliar with this learning experiment and with the problem under consideration served as subjects. They were divided into two groups (C.G. and E.G), each with six subjects. Both groups received explanations about the learning task, and after that one group (E.G.) received additional instruction "don't make errors". The same instruction was given at random to the subjects throughout the learning process of the initial task. The learning task was a two-hand coordination task and each subject performed twenty-five trails on the initial task and ten trials on the second task. Five dependent measures were analyzed in this experiment: execution time of trials, number of errors, number of directional errors, respiration rate and heart rate. The main results were as follows. In relation to the execution time of trials, no significant difference was found between the two groups. But in relation to errors and directional errors, the E.G. showed a higher rate of errors in comparison with the C.G. in the earlier stages of learning of the initial task and also in the earlier trials of the second task. It was found that error-restriction emphasis instruction tended to have a negative effect upon the adaptive process of two-hand coordination learning. In other words, when error-restriction emphasis instruction is given to the learner, the invariant properties of the skill become overemphasized, and as a result it becomes difficult to acquire flexible motor programs so essential to the adaptive process of perceptual-motor skill learning.
View full abstract