标题:825 ろう児における非言語性の知的作業に及ぼす練習の効果 (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 : 21. 言語障害・聴力障害 (1)) [in Japanese] 825. The effect of practice on nonverbal performance in deaf children. (TITLE OF PAPERS AND THE SUMMARIES OF DISCUSSIONS : 21. Speech and hearing Difficulties (1)) [in Japanese]