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Commentary on Coefficient Alpha: A Cautionary Tale

Published online by Cambridge University Press:  01 January 2025

Samuel B. Green  and
Yanyun Yang
Samuel B. Green*
Affiliation:
Arizona State University
Yanyun Yang
Affiliation:
Florida State University
*
Requests for reprints should be sent to Samuel B. Green, Arizona State University, P.O. Box 870611, Tempe, AZ 85287-0611, USA. E-mail: samgreen@asu.edu
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Abstract

The general use of coefficient alpha to assess reliability should be discouraged on a number of grounds. The assumptions underlying coefficient alpha are unlikely to hold in practice, and violation of these assumptions can result in nontrivial negative or positive bias. Structural equation modeling was discussed as an informative process both to assess the assumptions underlying coefficient alpha and to estimate reliability

Keywords

reliabilitycoefficient alphaviolation of assumptionsstructural equation modeling

Information

Type
Theory and Methods
Information
Psychometrika , Volume 74 , Issue 1 , March 2009 , pp. 121 - 135
Copyright
Copyright © 2008 The Psychometric Society

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