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A generalization of coefficient alpha

A generalization of coefficient alpha 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,β k, is proposed to correct this defect. Several properties ofβ k are also presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychometrika Springer Journals

A generalization of coefficient alpha

Psychometrika , Volume 42 (4): 17 – Dec 1, 1977

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References (10)

Publisher
Springer Journals
Copyright
1977 Psychometric Society
ISSN
0033-3123
eISSN
1860-0980
DOI
10.1007/BF02295978
Publisher site
See Article on Publisher Site

Abstract

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,β k, is proposed to correct this defect. Several properties ofβ k are also presented.

Journal

PsychometrikaSpringer Journals

Published: Dec 1, 1977

Keywords: Psychometrics; Assessment, Testing and Evaluation; Statistics for Social Sciences, Humanities, Law; Statistical Theory and Methods

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