A Comment on the Relationship between Coefficient Alpha and Scale Characteristics

To date, three major articles have analyzed the use of coefficient alpha on scales published in the marketing literature. These studies have improved our understanding of the scale development process and the behavior of coefficient alpha. One consistent result is that coefficient alpha produces an...

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Veröffentlicht in:Marketing letters 2000-05, Vol.11 (2), p.177-191
Hauptverfasser: Voss, Kevin E., Stem, Donald E., Fotopoulos, Stergios
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Stem, Donald E.
Fotopoulos, Stergios
description To date, three major articles have analyzed the use of coefficient alpha on scales published in the marketing literature. These studies have improved our understanding of the scale development process and the behavior of coefficient alpha. One consistent result is that coefficient alpha produces an R- square of approximately.10 when regressed against scale length. In the most recent of these three meta-analyses, Peterson (1994) suggested that alpha does not behave as suggested by theory. We reexamine the behavior of alpha in relation to scale length, scale width, and response centrality. Our results suggest different conclusions from those previously reached.
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subjects Central tendencies
Coefficients
Correlations
Cronbach's alpha
Distribution
Economic analysis
Estimate reliability
Estimation
Estimators
Hypotheses
Market scales
Marketing
Meta-analysis
Psychometrics
Regression analysis
Research design
Statistical methods
Statistical variance
Validity
title A Comment on the Relationship between Coefficient Alpha and Scale Characteristics
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