| 三参数等级反应模型及其信息函数的应用 |
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| 引用本文： | 陈青,丁树良.三参数等级反应模型及其信息函数的应用[J].考试研究,2009(2):77-84. |
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| 作者姓名： | 陈青 丁树良 |
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| 作者单位： | 华东交通大学;江西师范大学; |
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| 摘 要： | 项目反应理论（Item Response Theory，IRT）是现代教育心理测量领域中最有影响的一种测量理论，它的一个明确目标是扩展模型的种类以至于能够处理实际测试中任何形式的反应数据。在已有的各种模型研究中，对于多级评分项目，只考虑到项目区分度和难度。但在实际测验中，此类项目还可能存在猜测度。本研究基于Samejima等级反应模型，将项目猜测度融合到多级评分模型中，提出了三参数等级反应模型（Three-parameter Graded Response Model，3PL-GRM）。由于忽略多级反应项目的猜测度会使得该项目的信息量虚假升高，本研究还进一步将3PL—GRM的信息函数应用到试卷质量分析中。
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| 关 键 词： | 3PL—GRM 项目反应函数 Fisher信息量 |
Three-parameter Graded Response Model and It's Application |
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| Chen Qing Ding Shuliang East China Jiaotong University,Jiangxi Nanchang,JiangXi Normal University,Jiangxi Nanchang.Three-parameter Graded Response Model and It's Application[J].Examinations Research,2009(2):77-84. |
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| Authors: | Chen Qing Ding Shuliang East China Jiaotong University Jiangxi Nanchang JiangXi Normal University Jiangxi Nanchang |
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| Institution: | Chen Qing Ding Shuliang East China Jiaotong University,Jiangxi Nanchang,330013,JiangXi Normal University,Jiangxi Nanchang 332000 |
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| Abstract: | Item Response Theory(IRT)is the most influential measurement theory in educational and psychological testing.The primary goal in current IRT research is to expand the existing models to be applicable to any response data obtained from a test.However,only item discrimination and grade difficulty(or step parameters)have been considered in the research of existing models for polytomous item,In addition,there may have some guesswork in real examinations.Based on samijima graded response model,this research appl... |
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| Keywords: | 3PL-GRM Item Response Function Fisher information |
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