A test of the hypothesis that Cronbach's alpha reliability coefficient is the same for two tests administered to the same sample |
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Authors: | Leonard S. Feldt |
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Affiliation: | (1) College of Education, Division of Educational Psychology, Measurement & Statistics, The University of Iowa, 52242 Iowa City, Iowa |
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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.The author is indebted to Jerry S. Gilmer for development of the computer programs used in this study. |
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Keywords: | coefficient alpha reliability coefficients tests of significance |
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