标题:206 概念形成における先行訓練の関数としての逆転および非逆転移行(5.学習・知能・思考,日本教育心理学会第5回総会部門別研究発表要旨・討論の概要) [in Japanese] 206 Reversal and nonreversal shift as a function of pretraining trials(5.Learning, intelligence and thinking, PROCEEDINGS OF THE FIFTH ANNUAL CONVENTION OF JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY PAPERS AND THE SUMMARIES OF DISCUSSIONS) [in Japanese]