标题:321 多肢選択法の選択肢数について(8.評価,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] 321 About the numbers of alternatives of multiplechoice items(8.Evaluation, PROCEEDINGS OF THE FIFTH ANNUAL CONVENTION OF JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY PAPERS AND THE SUMMARIES OF DISCUSSIONS) [in Japanese]