摘要
信度指的是测验结果的一致性程度或者可靠性程度,主要有重测信度、折半信度、复本信度、布郎校正公式和克隆巴赫提出的a系数等。信度指标的获取方法主要有:用Spearm an-B row n P rophecy Form u la计算折半信度;用克朗巴赫(C ronbach)的a系数估算信度;用库德.理查逊21(K uder R ichardson form u la 21)公式计算信度;用库德.理查逊20(K uder R ichardson form u la20)公式计算信度系数。分析和研究信度的计算方法,理解信度的含义,正确运用信度的概念,对提高语言测试的质量,改进语言测试设计十分重要。
In general, test reliability is defined as the extent to which the test results can be considered consistent and stable. The very difficulty of measuring mental traits explains why consistency is of particular concern to language testers. This paper discusses the criterion for the evaluation of language tests and the definition and types of reliability. Also the author explains in detail the calculation and interpretation of reliability coefficients to examine the consistency of measurement.
出处
《江苏工业学院学报（社会科学版）》
2006年第3期70-72,38,共4页
Journal of Jiangsu Polyetchnic University:Social Science Edition
关键词
语言测试
信度
效度
克隆巴赫a系数
标准测量误差
language testing
reliability
validity
Cronbach
standard error of measurement
