信度的再认识与信度概括化研究

本文首先对信度概念进行了明确，指出信度是评价测验结果可靠与否的一个指标，而不是测验工具的不变属性。针对测验结果的信度估计的可变性，介绍了上世纪末Vacha-Haase提出的信度概括化研究方法．即一种用来探索得分信度估计的可变性、并对引起变异的预测源进行探讨的一种元分析方法。最后通过对信度概括化研究手段的分析，指出信度概念的再认识与信度概括化研究将会给心理测验工作者带来新的启示。

A Redefinition of Reliability and the Study of Reliability Generalization

The concept of reliability was first redefined as a property of the test result or score, not unchangeable property of the test as a tool. Then a new method, reliability generalization proposed by Vacha-Haase, was illustrated. It is a meta-analytic method in measurement used to explore the variability in score reliability estimates and the possible sources of the variance. Finally a brief summary of the reliability generalization method was given and its implication was discussed.