标题:605 学業不振児に関する研究(14.学力,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] 605 A study of the under-achiever(14.Aptitude, PROCEEDINGS OF THE FIFTH ANNUAL CONVENTION OF JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY PAPERS AND THE SUMMARIES OF DISCUSSIONS) [in Japanese]