国家义务教育质量监测小学科学测验题目数量对测验信度的影响  

The Influence of the Quantity of Primary School Science Test Questions on the Reliability of the National Compulsory Education Quality Monitoring

作　　者：姜有祥 曹郎 温红博 Jiang Youxiang;Cao Lang;Wen Hongbo(China Basic Education Quality Monitoring Collaborative Innovation Center,Beijing Normal University,Beijing,100088;RDFZ Sanya School,Sanya,Hainan,572014)

机构地区：[1]北京师范大学中国基础教育质量监测协同创新中心,北京100088 [2]海南省三亚市中国人民大学附属中学三亚学校,海南三亚572014

出　　处：《考试研究》2024年第6期20-30,共11页Examinations Research

摘　　要：探讨国家义务教育小学科学质量监测测验题目数量对信度的影响。采用概化理论和完全交叉设计,通过概化研究和决策研究,对各题本和总测验的信度状况、题目数量对信度的影响进行分析。在题本层面,除题本五的测验信度未达到0.80外,小学科学测验各题本信度均较高。对于6个题本,题目数量的增加能够提高测验的信度,但信度增长速度逐渐减缓。在题目数量达到一定水平后,继续增加题目数量对信度的影响较小。当各题本题目数在45题左右时,能够很好地保证各题本测验信度较高。总体测验层面,概化系数和可靠性系数分别为0.933和0.928,显示出较好的测验信度水平。在保证题目质量的前提下,如需缩减题目数量,可将总测验题目数由109题降至98题。This study aims to investigate the impact of the number of test items in the National Compulsory Education Primary School Science Quality Monitoring Test on reliability.Using the Generalizability Theory and a complete crossover design,an analysis was conducted to examine the reliability of each test form and the effect of the number of test items on reliability through generalizability study and decision study.At the test form level,except for test form 5,the reliability of the 2017 primary school science test forms was generally high,with reliability values above 0.80.For the six test forms,increasing the number of test items improved the test's reliability,although the rate of reliability improvement gradually diminished.Once the number of test items reached a certain level,the impact of further increasing the number of items on reliability became minimal.When the number of items in each test form was around 45,the test form's reliability was maintained at a high level.At the overall test level,the generalizability coefficient and reliability coefficient were 0.933 and 0.928,respectively,indicating good test reliability.On the condition that the quality of test items is ensured,if a reduction in the number of items is necessary,the total number of test items could be reduced from 109 to 98.

关 键 词：义务教育质量监测 小学科学 题目数量 测验信度 

分 类 号：G424.74[文化科学—课程与教学论]