Effect of Simultaneous Violations of Essential Tau-Equivalence and Uncorrelated Error on Coefficient Alpha.

Komaroff, Eugene

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Peer reviewed

ERIC Number: EJ598362

Record Type: Journal

Publication Date: 1997

Pages: N/A

Abstractor: N/A

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ISSN: ISSN-0146-6216

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Effect of Simultaneous Violations of Essential Tau-Equivalence and Uncorrelated Error on Coefficient Alpha.

Komaroff, Eugene

Applied Psychological Measurement, v21 n4 p337-48 Dec 1997

Evaluated coefficient alpha under violations of two classical test theory assumptions: essential tau-equivalence and uncorrelated errors through simulation. Discusses the interactive effects of both violations with true and error scores. Provides empirical evidence of the derivation of M. Novick and C. Lewis (1993). (SLD)

Descriptors: Correlation, Reliability, Simulation, Test Theory, True Scores

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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Authoring Institution: N/A

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Author Affiliations: N/A