Affiliation:
1. Auburn University
2. University of Georgia
3. Georgia Institute of Technology
Abstract
Confusion in the literature between the concepts of internal consistency and homogeneity has led to a misuse of coefficient alpha as an index of item homogeneity. Coefficient alpha is actually a complexly determined test statistic, item homogeneity only being one influence on its magnitude. The related statistic, the average intercorrelation, has similar difficulties. Several indices of item homogeneity derived from the model of common factor analysis are offered as alternatives.
Subject
Applied Mathematics,Applied Psychology,Developmental and Educational Psychology,Education
Cited by
375 articles.
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