“item discrimination index”的概念、定义、翻译、参考文献-科学参考

单词	item discrimination index
释义	item discrimination index Encyclopedia 理学【基本概念】释 item discrimination index项目鉴别指数高分组和低分组被试作答某题的得分率之差，是度量题目区分度的最简单指标之一，只能用于二级评分题目。又称鉴别度指数。理学【基本概念】释 item discrimination index题目区分度指数测验题目（题目）对被试某种潜在能力或特质的区分（或鉴别）能力的度量指标。
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