计算器自动化项目生成概述

Computerized Automatic Item Generation：An Overview

近年来，计算器自动化项目生成作为应对测验项目曝光问题的很具前景的一项技术，逐渐得到越来越多研究者的重视。这种技术是以认知心理学和心理测量学为基础，在测试过程中借助计算器自动生成目标难度水平的项目。该文首先简要介绍了这种技术的理论基础和两种具体方法，然后以项目设计系统法为例说明自动化项目生成研究的具体歩骤与优点，最后述评了这种技术的局限性及未来的发展趋势。

Computerized automatic item generation ahs been gradually recognized as one of the promising techniques to deal with test exposure in recent years. Based on principles of cognitive psychology and psychometrics， items at target difficulty levels can be generated automatically during testing. The present article first introduced its theoretical foundation and popular approaches briefly， and then illustrated how to conduct automatic item generation with one of its approaches─cognitive design system approach. Finally， the limits and further development of this technique were discussed.