抄録
69 preschool children were asked to observe a model's response patterns leading to the same reinforcement, and were also requested to perform themselves on subsequent test trials in simultaneous discrimination learning of two shapes. It was found, as expected, that the more an observer observed any specific response patterns, the more the patterns that were observed occurred on the test trials, and that there are two types of observational learning modes; a “one step, nonmediational” mode and a “two or more step, mediational” one.