项目反应理论在各级考试系统设计中应用策略的研究

Application Strategies of Item Response Theory in the Design of Various Testing Systems

项目反应理论（Item Response Theory IRT）是近20年来发展起来的一种比较完善的应用于心理与教育测试的理论，本文介绍了该理论并分析了该理论对在考试系统设计中的指导作用，就其理论模型中各个参数的估计在各级考试系统中的应用策略提出了见解。

Developed in the past two decades, Item Response Theory （IRT） is a relatively perfect theory applied to psychological and educational tests. The paper introduces the theory and analyzes the guiding role of the theory in design of testing systems. It also disusses the application strategies of the parameters of the theoretic model in various testing systems.