The trinitarian mannequin of validity conceptualizes validity as comprising three distinct, but interrelated, elements: content material validity, criterion-related validity, and assemble validity. Content material validity refers back to the extent to which a check covers the total vary of the content material area it’s meant to measure. Criterion-related validity includes the extent to which scores on a check are correlated with scores on different measures of the identical assemble, or criterion. Assemble validity refers back to the extent to which a check measures a hypothetical assemble, reminiscent of intelligence or persona, reasonably than concrete behaviors or occasions.
The unitary mannequin, then again, conceptualizes validity as a unitary idea, reasonably than as comprising a number of elements. In accordance with this mannequin, validity is set by the diploma to which inferences based mostly on check scores are warranted, given the aim and context wherein the check is getting used
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