On the Optimum Predictive Potential of Change Measure.

Gupta, J. K.; And Others

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Peer reviewed

ERIC Number: EJ384768

Record Type: Journal

Publication Date: 1988

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On the Optimum Predictive Potential of Change Measure.

Gupta, J. K.; And Others

Journal of Experimental Education, v56 n3 p124-28 Spr 1988

How the validity of gain scores varies with the standard deviations of pretest and posttest scores and the correlation between the two are analyzed. Earlier findings that under realistic testing conditions difference scores can have excellent predictive value are supported. Conditions under which gain scores have optimum validity are specified. (SLD)

Descriptors: Educational Change, Equations (Mathematics), Measures (Individuals), Predictive Validity, Pretests Posttests, Statistical Analysis, Test Theory

Publication Type: Journal Articles; Reports - Evaluative

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Language: English

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