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Direct linkGoeman, J. J.; De Jong, N. H. – Educational Measurement: Issues and Practice, 2018
Many researchers use Cronbach's alpha to demonstrate internal consistency, even though it has been shown numerous times that Cronbach's alpha is not suitable for this. Because the intention of questionnaire and test constructers is to summarize the test by its overall sum score, we advocate summability, which we define as the proportion of total…
Descriptors: Tests, Scores, Questionnaires, Measurement
