标题:004 精神薄弱児における人格発達の意味(1.方法・理論,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] 004 A meaning of personality development in the mentally retarted(1.Method and theory, PROCEEDINGS OF THE FIFTH ANNUAL CONVENTION OF JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY PAPERS AND THE SUMMARIES OF DISCUSSIONS) [in Japanese]