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Peer reviewed Peer reviewed
ERIC Number: EJ180466
Record Type: CIJE
Publication Date: 1977
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Limitations of Coefficient Alpha as an Index of Test Unidimensionality
Green, Samual B.; And Others
Educational and Psychological Measurement, 37, 4, 827-38, W 77
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. This misuse is discussed and several indices of item homogeneity derived from the model of common factor analysis are offered as alternatives. (Author/JKS)
Descriptors: Factor Analysis, Item Analysis, Test Interpretation, Test Items, Test Reliability
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Alpha Coefficient; Item Homogeneity