抄録
In Experiment I kindergarten children were trained on a two-stimulus problem to a criterion of 5 successive correct, 10 successive correct, or 10 plus 20 correct, responses. In Experiment II the Ss were trained on an intermediate-size problem to a criterion of 5 successive correct or 10 plus 20 correct responses. They were then given a Near (1 step) or a Far (4 steps) transposition test. In the two-stimulus problem transposition increased gradually with amounts of over-training but there was no distance effect. In the intermediate-size problem transposition increased after overtraining but decreased on the Far test, and the distance effect became insignificant after overtraining. The increment of transposition by overtraining is in line with the present hypothesis and supports the idea that overtraining facilitates to learn the relative concept of the stimulus properties. It may be concluded that the training level is an important determinant in the transposition behavior and that the distance effect occurs more evidently in the intermediate-size problem than in the two-stimulus problem.