abaddon
Penultimate Amazing
A related assertion, "Our surveys have internal consistency checks," was similarly cryptic and also hearsay. But this alludes to a very common practice in psychometric and sociometric instruments. Very often those questionnaires will ask a series of questions that are worded differently but actually address the same underlying phenomenon. It is expected that a sincere response will be consistent across all the congruent questions. This is meant to preclude the subject's attempt to fudge the test in one way or another. It allows the researcher to score an individual's set of responses for internal consistency, and allows inconsistent data to be rejected. Keep in mind this is not consistency as reckoned against some desired outcome, but consistency as reckoned between questions designed to discover the same thing.
Bingo. I participate in surveys, simply because I want to know what they might be interested in. What is at the forefront of attention. The reputable ones ask questions with an agenda. Not a political agenda, an agenda to weed out the inconsistent. The upfront screening questions are at a gross level designed to eliminate the obvious liars. If one answers by various inquiries that one has no kids/1 kid/2 kids/am a kid then the screening questions are there to eliminate such an unreliable source. And that is a gross example. It all gets WAY more subtle than such blunt instruments.