项目反应理论和认知心理学是两个不同的研究领域 ,把它们结合起来可以得到更多的题目信息。通常人们只是利用了项目反应理论提供的项目难度、区分度等统计指标 ,本研究发现对于具有不同认知特点的题目 ,它们的项目特征曲线和差异性系数是有显著差异的。高分组和低分组在认知结构上的差异 ,也可以通过项目特征曲线反映出来 Project Response Theory and Cognitive Psychology are two different areas of research, and they can be combined to get more topic information. Generally, people only make use of the statistical indicators such as item difficulty and degree of discrimination provided by the project response theory. The study found that there are significant differences in the project characteristic curves and the difference coefficients between the subjects with different cognitive characteristics. High-group and low-group differences in cognitive structure, but also can be reflected by the project characteristics curve