HOW TO PROVE VALIDITY CRITERIA

A.  Definition of Validity Criteria

            The procedure for achieving criterion-related validity requires an external criterion that can be related to the test scores tested for its validity. Criteria are behavioral variables that will be predicted by test scores. For example, an instrument to measure the performance of a group of employees (the test to be tested for validity), then the performance criteria on the instrument are compared with records in the field about good performance (external criteria). The correlation coefficient between test scores (X) with criterion (Y) is the validity coefficient symbolized by ρxy. These coefficients can be obtained through two different procedures in terms of data retrieval (score) criteria, each of which will result in predictive validity and concurrent validity.

        Predictive validity is obtained when the scoring criteria do not coincide with the test score taking. The predictive validity procedure takes a long time and costs a great deal, since the procedure is basically not a job that is considered completed after a single analysis, but continuously in developing the test as a good predictor.

         If the test scores and criteria score are obtained in relatively the same time, the correlation coefficient between the two variables is a coefficient of concurrency validity. The problem in the validity of the criteria is on determining the right criteria. While the function of the criteria, on predictive validation, the criteria is the behavioral variable that would be predicted by the test while the concurrent validation of the criteria is a measure of the suitability of the measuring function of the test concerned.

B.  How To Prove Validity Criteria

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