The Relative Error Magnitude in Three Measures of Change.

Zimmerman, Donald W.; Williams, Richard H.

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Peer reviewed

ERIC Number: EJ270529

Record Type: Journal

Publication Date: 1982-Jun

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The Relative Error Magnitude in Three Measures of Change.

Zimmerman, Donald W.; Williams, Richard H.

Psychometrika, v47 n2 p141-47 Jun 1982

Formulas for the standard error of measurement of three measures of change (simple differences; residualized difference scores; and a measure introduced by Tucker, Damarin, and Messick) are derived. A practical guide for determining the relative error of the three measures is developed. (Author/JKS)

Descriptors: Achievement Gains, Algorithms, Differences, Error of Measurement, Measurement Techniques, Test Reliability

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

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