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1·Item Response theory (IRT), as the base of CAT, is a theory of measurement based on mathematical model.

项目反应理论是CAT的基础，项目反应理论是一种建立在某种数学模型基础上的测量理论。

2·True score theory and item response theory are the two great theoretical patterns of psychological test.

真分数理论和项目反应理论是心理测验的两大理论模式。

3·Yu J Y. Item Response Theory Application (in Chinese). Nanjing: Jiangshu Education Publishing House, 1992

余嘉元。 项目反应理论及其应用。 南京：江苏教育出版社，1992。

4·Based on the item response theory, computerized adaptive testing (CAT) is the product of the needs of The Times.

基于项目反应理论的计算机化自适应考试(CAT)就是符合时代需要的产物。

5·The workshop will start with a review of item response theory, both parametric and non-parametric approaches will be introduced.

课程将从项目反应理论开始，并介绍相关的参数方法和非参数方法。

6·Item response theory is considered as one of the best hypothesis to detect the DIF compared with the classical measurement theory.

与经典测量理论相比，在测查项目功能差异时，运用项目反应理论有较强的前提假设和优越性。

7·The test information is an important concept in the Item Response Theory. It could be used to predict and evaluate the quality of one test.

测验信息量是项目反应理论中的一个重要概念，它可以用来预测和评价一个测验的误差大小。

8·IRT true score equating and IRT observed score equating in common-item non-equivalent group design based on the item response theory were compared.

研究采用锚测验非等组设计，对IRT真分数等值和IRT观察分数等值两种方法进行了比较研究。

9·Item response theory (IRT) and cognitive psychology are two different research areas. It can offer more item information if we combine them together.

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。

10·This paper is divided into three chapters, the content is as follows: chapter I simply introduces the model of the item response theory and some useful methods of parameter estimation.

本论文共分三章，主要内容安排如下：第一章简单介绍了项目反应理论模型和几种常见的参数估计的方法。