阿尔法、无维度和基于模型的内部一致性信度
Alpha, Dimension-Free, and Model-Based Internal Consistency Reliability.
作者信息
Bentler Peter M
机构信息
University of California, Los Angeles.
出版信息
Psychometrika. 2009 Mar 1;74(1):137-143. doi: 10.1007/s11336-008-9100-1.
Abstract
As pointed out by Sijtsma (in press), coefficient alpha is inappropriate as a single summary of the internal consistency of a composite score. Better estimators of internal consistency are available. In addition to those mentioned by Sijtsma, an old dimension-free coefficient and structural equation model based coefficients are proposed to improve the routine reporting of psychometric internal consistency. The various ways to measure internal consistency are also shown to be appropriate to binary and polytomous items.
摘要
正如西茨马（即将出版）所指出的，作为综合得分内部一致性的单一汇总指标，α系数并不合适。有更好的内部一致性估计方法。除了西茨马提到的那些方法外，还提出了一种古老的无维度系数和基于结构方程模型的系数，以改进心理测量内部一致性的常规报告。还表明，测量内部一致性的各种方法适用于二分法和多分法项目。
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