THE PROBLEM OF CONTROLLING LEVEL OF LEARNING IN STUDIES OF ASSOCIATIVE INTERFERENCE IN PSYCHOMOTOR PERFORMANCE.
IOWA STATE UNIV IOWA CITY
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A satisfactory solution of the problem of controlling level of learning on a psychomotor task could assume that level of learning is most adequately controlled when each individual has attained the same relative level with respect to his own learning potential. This level could be one-third or one-half or some other part of the individuals total potential ability to perform. Using this criterion, it would be necessary to give each subject a fixed number of trials on, say, the Mashburn apparatus, fit a curve to the resulting scores, and then extrapolate to obtain an estimate of his performance asymptote. Each subject could then be given the number of practice trials required to reach the predetermined level with respect to this predicted asymptote. The determination of this level would be made upon the assumption of equality of units at different points of the learning curve. Level of learning could be regarded as more nearly equal because each subject would have attained the same relative level with respect to his own performance asymptote. If a group curve were desired, the Vincent technique would have to be employed to combine the individual durves where each would have a different number of trials in attaining the criterion. Author