Descriptor
| Control Groups | 1 |
| Equations (Mathematics) | 1 |
| Error of Measurement | 1 |
| Estimation (Mathematics) | 1 |
| Mathematical Models | 1 |
| Paradox | 1 |
| Pretests Posttests | 1 |
| Regression (Statistics) | 1 |
| Research Design | 1 |
| Scores | 1 |
Source
| Journal of Educational… | 1 |
Author
| Samsa, Gregory P. | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Evaluative | 1 |
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedSamsa, Gregory P. – Journal of Educational Measurement, 1992
Regression to the mean (RTM) is often misunderstood. It is demonstrated that artifactual RTM depends fundamentally on the magnitude of measurement error at pretest. Adjustment usually involves estimating the measurement error and determining consequences, but even without adjustment, effects of RTM can be ameliorated. (SLD)
Descriptors: Control Groups, Equations (Mathematics), Error of Measurement, Estimation (Mathematics)
