discriminant validity

the degree to which a test or measure diverges from (i.e., does not correlate with) another measure whose underlying construct is conceptually unrelated to it. This is one of two aspects of construct validity, the other being convergent validity. Also called divergent validity.

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Psychology term of the day

December 24th 2024

dihydroergotamine

n. a semisynthetic derivative of the ergot alkaloid ergotamine, used in the treatment of acute migraine headache. It is a potent vasoconstrictor due to its ability to antagonize alpha-adrenergic receptors in blood-vessel walls as well as serotonin and dopamine receptors. U.S. trade names: DHE 45; Migranal.