Adjusting for hard and easy graders
Chambers, D.W.
Journal of Dental Education 51(12): 723-726
1987
ISSN/ISBN: 0022-0337 PMID: 3479484 Document Number: 294543
The dental education literature demonstrates that rater training and the use of criterion-anchored evaluation systems have been only partially successful in reducing the use of private standards by raters. A method is described for statistically removing this source of bias. A study is reported where scores normalized using this technique were significantly better predictors of students' future performance than were raw scores. Assumptions, techniques, and practical considerations are also discussed.