Validity refers to a test's ability to measure what it is supposed to measure. A result greater than .85, however, tells us that the two constructs overlap greatly and they are likely measuring the same thing. Discriminant validity is the degree to which scores on a test *do not* correlate with scores from other tests that *are not* designed to assess the same construct. For example, if discriminant validity is high, scores on a test designed to assess aggressiveness should not be positively correlated with scores from tests designed to assess intelligence. Discriminant validity is the degree to which two conceptually similar concepts are distinct. Get the word of the day delivered to your inbox, © 1998-, AlleyDog.com. Since we deal with latent variables which are not observable we have to create instruments in order to measure them. In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Psychology Definition of DISCRIMINANT VALIDITY: Form of construct validity shown by measuring the constructs conceptually unrelated and o not correlate with data. Revised on June 19, 2020. x "Discriminant validity." is the reliability of x, and Our general discussion of the notion of discriminative validity will start with Campbell’s fundamental notion of trait validation (Campbell & Fiske, 1959). A successful evaluation of discriminant validity shows that a test of a concept is not highly correlated with other tests designed to measure theoretically different concepts. {\displaystyle r_{yy}} This entry discusses origins and definitions of content validation, methods of content validation, the role of [Page 239] content validity evidence in validity arguments, and unresolved issues in content validation. In psychology, discriminant validity tests whether concepts or measurements that are not supposed to be related are actually unrelated. https://www.definitions.net/definition/Discriminant+validity. How to say Discriminant validity in sign language? Validity is the accuracy of test or experiment. There are variants of construct validity. Under this definition, one can show that reliability of the test and the criterion places an upper limit on the possible correlation between them (the so-called validity coefficient). In quantitative research, you have to consider the reliability and validity of your methods and measurements.. Validity tells you how accurately a method measures something. Choose from 500 different sets of validity types psychology flashcards on Quizlet. For example, if scores on a specific form a aggressiveness test are similar to people's scores on other aggressiveness tests, then convergent validity is high (there is a positively correlation between the scores from similar … of discriminative construct validity, or one made with an absence of confirming evidence. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. 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