What is test validity and test validation?
Tests themselves are not valid or invalid. Instead, we validate the use of a test score.
Tests are pervasive in our world. Tests can take the form of written responses to a series of questions, such as the paper-and-pencil SAT™, or of judgments by experts about behavior, such as those for gymnastic trials or for a work performance appraisal. The form of test results also vary from pass/fail, to holistic judgments, to a complex series of numbers meant to convey minute differences in behavior.