The appropriateness of inferences made on the basis of observations or measurements (often test scores). Specifically, whether the test can be reasonably considered to reflect the intended construct. In other words: Construct validity refers to the degree to which a psychological test or assessment measures the abstract concept or psychological construct it is intended to measure. It confirms that the test has been constructed in such a way that it can successfully test what it claims to test. Construct validity in psychodiagnosis determines the degree of the measured characteristic in the test results. Scale scores are analyzed based on the psychological construct of the characteristic being measured or a particular psychological concept.