Discussion: Regression toward the Mean and the Interval between Test Administrations.

Linn, Robert L.

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ERIC Number: EJ244985

Record Type: Journal

Publication Date: 1980

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Discussion: Regression toward the Mean and the Interval between Test Administrations.

Linn, Robert L.

New Directions for Testing and Measurement, n8 p83-89 1980

If the correlation between selection test and pretest is greater than the correlation between selection test and posttest, a selected group will continue to regress to the mean in the norm-referenced model of the Title I Evaluation and Reporting System and, therefore, yield a biased estimate. (Author/RL)

Descriptors: Correlation, Pretests Posttests, Prognostic Tests, Regression (Statistics), Statistical Bias, Time Factors (Learning)

Publication Type: Journal Articles; Reports - Research; Opinion Papers

Education Level: N/A

Audience: N/A

Language: English

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