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Peer reviewed Peer reviewed
Zimmerman, Donald W. – Journal of Experimental Education, 1977
Derives formulas for the validity of predictor-criterion tests that hold for all test scores constructed according to the expected-value concept of true score. These more general formulas disclose some paradoxical properties of test validity under conditions where errors are correlated and have some implications for practical testing situations…
Descriptors: Correlation, Criterion Referenced Tests, Scoring Formulas, Tables (Data)
Peer reviewed Peer reviewed
Rock, Daniel L. Fordyce, Wilbert E. – Journal of Experimental Education, 1982
A methodology of computing prescribed point biserial correlation coefficients and then evaluating the coefficients with respect to three criteria was developed. It can be used to assess the item convergent validity of nonobjectively scored test items. (Author/PN)
Descriptors: Correlation, Data Analysis, Item Analysis, Measurement Techniques