区分度在中考试题质量分析中的应用

摘要

Expounding the effect and connotation of differentiation index, the paper discusses calculating methods and application of three common differentiation indexes in classical testing theory and item response theory.%阐述了区分度的内涵和作用，探讨了在经典测量理论和项目反应理论中三种常用区分度的计算方法及其应用。