To measure predictive validity, test results of applicants are compared with their subsequent job performance. The following example illustrates how a predictive validity study might be designed. A retail chain, Eastern Discount, wants to establish the predictive validity of requiring one year of cashiering experience, a test it plans to use in hiring cashiers. Obviously, the retail outlet wants to use the test that will do the best job of separating those who will do well from those who will not. Eastern Discount first hires
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