Face Validity

Face validity is a property of a test intended to measure something. The test is said to have face validity if it "looks like" it is going to measure what it is supposed to measure.[1]  For instance, if you prepare a test to measure whether students can perform multiplication, and the people you show it to all agree that it looks like a good test of multiplication ability, you have shown the face validity of your test.
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one of the forms of validity for an operational definition .  If an operational definition has "face validity" then, on the face of things, it appears to measure what it is supposed to measure.  If a test that called itself a test for creativity, for example, consisted of qusetions testing the subject's ability to memorize, then the test would not have "face validity."  This would be so even if later studies showed that people who scored high on this test actually were more creative than people who scored low on the test.  Contrast "face validity" with "construct validity ."

the apparent plausibility of the results of marketing research, which on the basis of logic and common sense, seems to be correct.