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The docmented effectiveness to which I refer are the tests in which individuals who are, for some reason, not qualified for a particular position, but still try to acquire the job.  When verified evidence surfaces that disqualifies them, the process is a success and is valuable.  In other words, pre-test, in-test or post-test admissions or confessions.

Only if they can get the applicant to make a confession or admission.  Gullible, naive and innocent applicants are more likey to make insignificant admissions that will be blown out of all proportion by examiners.   OTOH, would be or actual spies (e.g. Aldrich Ames) will sit there, look you in the eye, and calmly deny until the cow comes home (and consequently pass!).

Note that background investigations, in which admissions can be "checked out" only take place IF/ONLY IF the applicant passes the polygraph and moves forward in the hiring process!

Note the following from the NAS report:

"Nevertheless, if the proportion of major security risks in the population being screened is equal to or less than 1 in 1,000, it is reasonable to expect even with optimistic assessments of polygraph test accuracy that each spy or terrorist that might be correctly identified as deceptive would be accompanied by at least hundreds of nondeceptive examinees mislabeled as deceptive, from whom the spy or terrorist would be indistinguishable by polygraph test result. The possibility that deceptive examinees may use countermeasures makes this tradeoff even less attractive."


IOW, in the case of employment screening tests, innocent people are falsely labeled deceptive who aren't.  Sometimes they luck out and ACTUALLY CATCH SOMEONE!  Of course, they will never know because there is no follow up verification when people fail the test.  In the case of both false and true positives, the applicant just get's a "rejection" letter.  The trade off ain't worth it!

Which is why my advise to applicants is DON'T LET THEM CON YOU INTO MAKING A FALSE CONFESSION!  Listen to the questions, have them explain the questions so you know exactly what they mean, answerthe questions truthfully, and don't believe them if they try to tell you that you are lying when you ain't!  

Their goal is NOT to test the veracity of the applicants answers to relevant question, but TO SEE WHAT THEY CAN GET OUT OF YOU, whether you answer the relevant questions truthfully or not!

Don't fall for their STING operation!

The Relevant questions on my test were:

1.  Have you ever had an unauthorized contact with a foreign national?

2.  Have you ever plotted to overthrow the US government or belong to any group advocating the same?

3.  Have you ever knowingly disclosed classified information?

4.  Do you plan to answer all questions on this test truthfully?

No, hell no, of course not, and no freaking way!!!

What else is there to talk about?  

And if the INTERROGATION continues, just know you are being truthful.  Think about what you're going to eat for dinner later that evening.  Think about how you think the Yankees will do this year.   Go over your "family tree" in your head starting on our paternal side with your GGGGF.  And, yes, keep shaking your head and say:  "no, no, can't think of why I'd be reacting to that question.  Gee!  I just don't know.  I'm drawing a blank sir. Sorry!"