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In psychology, discriminant validity tests whether concepts or measurements that are not supposed to be related are actually unrelated. Campbell and Fiske (1959) introduced the concept of discriminant validity within their discussion on evaluating test validity .
The multitrait-multimethod (MTMM) matrix is an approach to examining construct validity developed by Campbell and Fiske (1959). [1] It organizes convergent and discriminant validity evidence for comparison of how a measure relates to other measures. The conceptual approach has influenced experimental design and measurement theory in psychology ...
To ensure that the PAI maximized discriminant validity, each of the scales should be relatively distinct from one another. For example, if the depression and anxiety scales had many of the same items on them, it would be difficult to tell if elevations on these scales meant that the person was experiencing symptoms of depression, anxiety, or both.
The validity of a measurement tool (for example, a test in education) is the degree to which the tool measures what it claims to measure. [3] Validity is based on the strength of a collection of different types of evidence (e.g. face validity, construct validity, etc.) described in greater detail below.
Convergent validity in the behavioral sciences refers to the degree to which two measures that theoretically should be related, are in fact related. [1] Convergent validity, along with discriminant validity , is a subtype of construct validity .
Convergent validity refers to the degree to which two measures of constructs that theoretically should be related, are in fact related. In contrast, discriminant validity tests whether concepts or measurements that are supposed to be unrelated are, in fact, unrelated. [19] Take, for example, a construct of general happiness.
The MMPI-2-RF builds on the Restructured Clinical (RC) scales developed in 2003, [9] and subsequently subjected to extensive research, [32] with an overriding goal of improved discriminant validity, or the ability of the test to reliably differentiate between clinical syndromes or diagnoses. Most of the MMPI and MMPI-2 Clinical Scales are ...
Construct validity (e.g., predictive, concurrent, convergent, and discriminant validity) Good: Shows convergent validity with other symptom scales such as ESS and Karolinska Sleepiness Scale, [6] prediction of performance after sleep deprivation [4] Discriminative validity: Adequate