Aleaming effect can be promoted when aleamer is forced to explain learning materials. However, this is a difficult task for a novice explainer. To examine the relation between the content of explanations and learning, the explanations of a junior high school student (novice learner) and a university student (expert learner) were compared. The results indicated that the university student could produce the explanation by forming associations with prior knowledge, whereas the junior high school student was unable to do so, However, the second time the junior high school student was asked to provide explanations, the student was able to produce the explanation, which was due to the fact that he was prepared with regard to the structure of the explanation. It was shown that, at the very least, this preparation contributes to a text-based understanding.

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