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A Modification of Feldt's Test of the Equality of Two Dependent Alpha Coefficients

Published online by Cambridge University Press:  01 January 2025

Yousef M. Alsawalmeh  and
Leonard S. Feldt
Yousef M. Alsawalmeh*
Affiliation:
Yarmouk University
Leonard S. Feldt
Affiliation:
The University of Iowa
*
Requests for reprints should be sent to Leonard S. Feldt, 334 Lindquist Center, Iowa City, IA 52242.
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Abstract

The available statistical tests of the equality of nonindependent alpha reliability coefficients require that the product of the number of test parts times the number of subjects be quite large—1000 or more. A modification of one of these tests is derived which avoids this limitation. Monte Carlo studies indicate that the modified test effectively controls the Type I error rate with as few as 2 or 3 test parts and 50 subjects. This means the modified test can be safely employed in comparisons between interrater reliabilities.

Keywords

coefficient alphaequality of alpha coefficientsstatistical tests for reliabilitiesCronbach's alpha
Type
Original Paper
Information
Psychometrika , Volume 59 , Issue 1 , March 1994 , pp. 49 - 57
Copyright
Copyright © 1994 The Psychometric Society

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