结合题目作答时间的计算机化自适应测验选题方法  

The Use of Response Time in Item Selection of Computerized Adaptive Testing

作　　者：郭治辰 汪大勋 蔡艳[1] 涂冬波[1] Guo Zhichen;Wang Daxun;Cai Yan;Tu Dongbo(School of Psychology,Jiangxi Normal University,Nanchang,330022)

机构地区：[1]江西师范大学心理学院,南昌330022

出　　处：《心理科学》2021年第5期1241-1248,共8页Journal of Psychological Science

基　　金：国家自然科学基金(31960186、31760288、31660278)项目的资助。

摘　　要：计算机形式的测验能够记录考生在测验中的题目作答时间(RT),作为一种重要的辅助信息来源,RT对于测验开发和管理具有重要的价值,特别是在计算机化自适应测验(CAT)领域。本文简要介绍了RT在CAT选题方面应用并作以简评,分析了这些技术在实践中的可行性。最后,探讨了当前RT应用于CAT选题存在的问题以及可以进一步开展的研究方向。The computer-based test enables the examinee’s response time(RT)to be recorded accurately.As an important source of auxiliary information,RT have an important potential value for test development and management,especially in the field of Computerized Adaptive Testing(CAT).With the collection of RT,the CAT assessment process can be further improved in terms of precision,fairness,and minimizing costs.It is widely known that item selection is the key step of CAT,which reflects its"adaptive"characteristics.The traditional CAT item selection algorithm does not consider RT information,this is unfavorable for test management and may lead to biased assessment results.This paper synthetically and briefly introduces the application of RT in the item selection of CAT and analyzes the feasibility of these techniques in practice,which makes the readers have a specific and clear understanding of the potential value of RT in CAT.Since item selection in CAT is based on the candidate's ability estimation(except for the selection of initial items),the improvement of ability estimation can also be considered as an indirect improvement of the item selection.Therefore,this paper divides relevant methods into two categories:(1)indirect improvement of item selection by RTs(ability estimation)and(2)direct improvement of item selection by RT(item selection method).Generally,a majority of tests are a mixture of speed and power components,while the RT provide information not only examinees’ability but also item characteristics.In the past decades,a lot of models for RT and response accuracy(RA)has been proposed(e.g.,Thissen,1983;Wang&Hanson,2005;van der Linden,2007),which makes it possible to use RT to improve the accuracy of ability estimation in CAT,and the item selection is further improved(van der Linden,2008).In general,examinees with the same ability level may need different time to complete an item(van der Linden et al.,1999),and the response time of an examinee for different items may also be different because some items are us

关 键 词：计算机化自适应测验 题目作答时间 能力估计 选题方法 题目曝光 测验时间 

分 类 号：B841.7[哲学宗教—基础心理学]