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A test of the hypothesis that cronbach's alpha or kuder-richardson coefficent twenty is the same for two tests

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Abstract

An approximate statistical test is derived for the hypothesis that the reliability coefficients (Cronbach's α) associated with two measurement procedures are equal. Control of Type I error is investigated by comparing empirical sampling distributions of the test statistic with the theoretical model derived for it. The effect of platykurtosis in the test-score distribution on the test statistic is also considered.

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Feldt, L.S. A test of the hypothesis that cronbach's alpha or kuder-richardson coefficent twenty is the same for two tests. Psychometrika 34, 363–373 (1969). https://doi.org/10.1007/BF02289364

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  • DOI: https://doi.org/10.1007/BF02289364

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