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| Charter, Richard A. | 2 |
| Feldt, Leonard S. | 2 |
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Peer reviewedFeldt, Leonard S.; Charter, Richard A. – Measurement and Evaluation in Counseling and Development, 2003
Evaluating a test's reliability often requires dividing it into 3 or more unequal parts, which causes violation of the tau equivalence assumption of Cronbach's alpha. This article presents a criterion for abandoning alpha and an approach for computing a more appropriate estimate of reliability, the Gilmer-Feldt coefficient. (Author)
Descriptors: Counseling, Evaluation Methods, Psychometrics, Test Reliability
Peer reviewedCharter, Richard A.; Feldt, Leonard S. – Measurement and Evaluation in Counseling and Development, 2002
Presented is a detailed description of two true score confidence interval approaches, their use, interpretation, and a philosophical conflict that arises in many applied instances. (Contains 27 references.) (Author)
Descriptors: Error of Measurement, Psychometrics, Research Methodology, Statistical Analysis
