Abstract

Computer simulations indicate that the correlation between baseline and change, by itself, does not invalidate the use of gain scores to measure change, but when the negative correlation is accompanied by decrease in variance from pretest to posttest, covariance is a superior measure of change. (SLD)

Citation

Jamieson, J. (1995). Measurement of Change and the Law of Initial Values: A Computer Simulation Study. Educational and Psychological Measurement, 55(1), 38-46. Retrieved August 14, 2024 from https://www.learntechlib.org/p/78928/.

This record was imported from ERIC on April 18, 2013. [Original Record]

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Keywords

• Analysis of Covariance
• Change
• Computer Simulation
• Correlation
• Error of Measurement
• Measurement Techniques
• Pretests Posttests
• Statistical Studies