摘要
基于Samejima等级反应模型,将项目猜测度融合到3参数等级反应模型中,且开发了相应的项目参数估计程序,使用模拟数据和实测数据对程序进行了检验;并且证明了如果忽略项目的猜测度,会使能力估计的精度虚假地升高.
Replacing 2-parameter Logistic model in Samejima's Graded Response Model with 3-parameter Logistic model,the 3PL-GRM is proposed and the program of estimation of unknown parameters in the new model was developed.To verify the available utility of the program,some Monte Carlo simulations and empirical study were made.It was proved that the Fisher information of 3PL-GRM is smaller than that of GRM.It means that the item information decreases along with guessing parameter increasing,so the estimation of ability parameter is not accurate with ignoring guessing.
出处
《江西师范大学学报(自然科学版)》
CAS
北大核心
2010年第2期117-122,共6页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金(30860084)
教育部高校博士基金(8020070414001)
卫生部项目(KY200704)
江西省教育厅科技项目(GJJ08154
GJJ10238
GJJ10098)
天津市教育科学规划课题(Z409)资助项目