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A Test of the Hypothesis that Cronbach's Alpha Reliability Coefficient is the Same for Two Tests Administered to the Same Sample

Published online by Cambridge University Press:  01 January 2025

Leonard S. Feldt
Leonard S. Feldt*
Affiliation:
University of Iowa
*
Requests for reprints should be sent to Leonard S. Feldt, College of Education, Division of Educational Psychology, Measurement & Statistics, The University of Iowa, Iowa City, Iowa 52242.
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Abstract

In measurement studies the researcher may wish to test the hypothesis that Cronbach’s alpha reliability coefficient is the same for two measurement procedures. A statistical test exists for independent samples of subjects. In this paper three procedures are developed for the situation in which the coefficients are determined from the same sample. All three procedures are computationally simple and give tight control of Type I error when the sample size is 50 or greater.

Keywords

coefficient alphareliability coefficientstests of significance

Information

Type
Original Paper
Information
Psychometrika , Volume 45 , Issue 1 , March 1980, pp. 99 - 105
Copyright
Copyright © 1980 The Psychometric Society

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Footnotes

The author is indebted to Jerry S. Gilmer for development of the computer programs used in this study.

References

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