Test information, which is an important concept in item response theory can be used to predict and evaluate the bias of a test. In this paper, some formulas relative to the test information about logistic model and normal curve model are given, which prov%测验信息量是项目反应理论中的一个重要概念,是预测和评价一个测验的误差大小的重要方法.针对在测试中应用较广的逻辑斯特模型和正态曲线模型,本文指出了相应的测验信息函数的表达式,并将其应用于试卷质量的分析中,为试卷的量化分析和选择提供了参考。
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