A Generalization of Coefficient Alpha

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1977 English Publisher:Cambridge University Press (CUP)Journal:Psychometrika, volume 42, pages 549-565 (issn: 0033-3123, eissn: 1860-0980,

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Authors: Raju, Nambury S.;

doi: 10.1007/bf02295978

A Generalization of Coefficient Alpha

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Abstract

It is well known that coefficient alpha can be used to estimate the reliability of a test even when the test is split into several parts. It is also known that alpha can severely underestimate test reliability when the several parts have an unequal number of items. A gernalization of alpha, βk, is proposed to correct this defect. Several properties of βk are also presented.

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Science Research Associates
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Inter Science Research Associates (United States)
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Keywords

Mathematical psychology, Applications of statistics to psychology

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