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Validity (psychometric) Encyclopedia @ aNewLow.com (A New Low) (Site not responding. Last check: 2007-10-21) |
 | | A common approach, called criterion validity, is to correlate measures with a criterion measure known to be valid. |
 | | Content validity, or face validity, is simply a demonstration that the items of a test are drawn from the domain being measured; it does not guarantee that the test actually measures phenomena in that domain. |
 | | According to classical test theory, predictive or concurrent validity cannot exceed the square of the correlation between two versions of the same measure -- that is, validity cannot exceed reliability. |
| anewlow.com /encyclopedia/Validity_(psychometric) (365 words) |