标题:105 図形の認知構成過程の発達的研究 : 精神薄弱児について (日本教育心理学会第4回総会部門別研究発表要旨・討論の概要 : 2. 発達 (1)) [in Japanese] 105. A developmental study of cognitive and constructive processes of mosaic patterns in mentally retarded children. (TITLE OF PAPERS AND THE SUMMARIES OF DISCUSSIONS : 2. Deveropment (1)) [in Japanese]