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| Correlation | 1 |
| Pretests Posttests | 1 |
| Prognostic Tests | 1 |
| Regression (Statistics) | 1 |
| Statistical Bias | 1 |
| Time Factors (Learning) | 1 |
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| New Directions for Testing… | 1 |
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| Linn, Robert L. | 1 |
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Linn, Robert L. – New Directions for Testing and Measurement, 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)
