项目反应理论在大规模选拔性考试试题质量评价中的应用

The Application of Item Response Theory in the Quality Evaluation of Large-scale Screening Test

项目反应理论在大规模选拔性考试试题质量评价中具有经典测量理论所不具备的诸多优势，在国内外得到越来越多的应用。按照分析常模参照性测验的程序和方法，应用项目反应理论对贵阳市2011年高三英语模拟考试试题命题质量进行分析，再次证明了项目反应理论分析测验质量具有项目参数跨样本不变性、对被试特质水平的估计不受测验项目影响等优点，在基础教育考试命题工作中具有重要的价值与应用前景。

Item Response Theory(IRT)has many properties superior to Classical Test Theory(CTT) in the quality evaluation of large-scale screening test and has been widely used at home and abroad.Based on the analysis procedure and requirements of norm-referenced test,the quality of practice English test for 3rd grade senior high school students was analyzed with IRT and advantageous properties of IRT was empirically confirmed again:item parameters of IRT models are not sample or test-dependent;and the evaluation of the levels of the tested samples is independent of the test items.IRT is highly evaluated and will be applied more and more widely in educational test in basic education.