Discriminant validity is a measure of construct validity that measures the extent to which the scale correlates positively with other measures of the same construct.

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Discriminant validity is the measure of construct validity that measures the extent to which a scale correlates negatively with other measures that are conceptually unrelated. In other words, it is the degree to which a scale is distinct from other constructs that it should not be related to.

Discriminant Validity Is a Measure of Construct Validity That Measures