基于多面Rasch模型的初中英语口语测试EBB评分标准研究与效度验证  

A Study of Constructing and Validating an EBB Rating Scale for a Large-scale and Low-stakes English Oral Test of 8th Graders

作　　者：高淼[1] 

机构地区：[1]中央财经大学外国语学院

出　　处：《中国考试》2016年第12期29-38,47,共11页journal of China Examinations

基　　金：国家社科基金项目"中国初中英语教师评价素养量表研制与验证研究"(批准号:15CYY022);"中央财经大学外国语学院2014年度院级课题"的资助

摘　　要：评分标准是测试构念的可操作化体现。本文介绍了EBB评分标准的定义和优势,尝试了如何基于考生真实的测试表现数据,为一项低风险的大规模初中英语口语测试制定EBB评分标准,并基于项目反应理论,利用多面Rasch模型对其进行效度验证。研究结果表明,包含语音语调、准确性、交际有效性和任务完成度四个评分维度的EBB评分标准符合分割指数、平均测量值和未加权均方拟合指数等关键测量指标要求,具有较好的效度,并且分数段划分合理,可操作性强。Rating scale is actually the operationalization of the construct of a test. This article first introduces what EBB is and states its advantages by comparing it with other ways of constructing scales. Then how to construct EBB scale based on students＇ test performance data is introduced by presenting the procedure and the selection of data. Lastly, the scale is validated by utilizing the Multi-facet Rasch analysis and revisions are made accordingly. The results indicates that the EBB scale is both valid and reliable and of practicality.

关 键 词：EBB评分标准 口语测试 多面Rasch 效度 

分 类 号：G405[文化科学—教育学原理]