A Comparison of Three Linear Equating Methods for the Common-Item Nonequivalent-Populations Design.

Woodruff, David J.

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Peer reviewed

ERIC Number: EJ401753

Record Type: Journal

Publication Date: 1989

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A Comparison of Three Linear Equating Methods for the Common-Item Nonequivalent-Populations Design.

Woodruff, David J.

Applied Psychological Measurement, v13 n3 p257-61 Sep 1989

Linear equating methods for the common-item non-equivalent populations design were compared when true-score correlation between the test and anchor was less than unity. Scores from two groups of approximately 300 examinees illustrated three methods: (1) the Tucker equating method; (2) the Angoff-Levine method; and (3) the Congeneric-Levine method. (SLD)

Descriptors: Comparative Analysis, Equated Scores, Mathematical Models, Research Design, Statistical Analysis

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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