confused wrote on Feb 27
th, 2003 at 1:43am:
Marty,
Acouple of small points. I don't believe CQT testing came about due to "fear of consequences". It came about over concern for truthful people. Do you think that some one lying about crime questions on a test care about any other questions on the test? It is not that hard to catch a liar on a Polygraph.
Having read the history of the CQT in Kleiner's manual let me be more specific. Earlier, the polygraph was given with questions like "Is your name xxx?" together with relevant questions like "did you rob the bank?" This produced a high false positive rate due to some people that feared being falsely accused (fear of consequences). The CQT was developed to mitigate this by coming up with a question the examiner doesn't really care about but can convince the examinee that they do. Though I am bothered by the deception involved, it can, if pulled off, improve the odds of a not getting a false positive.
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I don't know of any Polygraph examiner who feels the test is nearly infallible. You have to work hard to do a good test.
I agree with you on both counts. It is the more naive general populace that believes the polygraph nearly infallible.
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If the purpose of a control question is to help truthful people on a test why is that bad? It neither helps nor hurts liars, so whats the problem.
That does get back to my real question of interest, how polygraphers test each other. A control question helps innocent people when they don't understand how it works but not if they do or if they are unusually honest. It works against them then. Polygraphers certainly can't fool each other and should be at higher risk of false positives if CQTs are also used on them - assuming they are scored the same as naive subjects. I guess I just don't like deception, even when it is used for good ends, especially in employee screening.
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Let's talk about drug research. In trials it used to be common to give a control group placebo's. If they were told that, would it not defeat the purpose of the placebo?
Actually in ethical drug tests, and this has long been the practice, the subjects are told that some of them will recieve placebo's and they are told what percentage. That's part of informed consent. The doctors administering the drugs don't even know who is getting the placebo.
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As far as testing other examiners let me talk about my own Philosophy on taking the test. If I don't lie I won't respond to the questions and they have no basis to say I did. I will say further that on examiners I have tested a few showed responses to the relevant questions and I told them that.
Hmm. Are you saying that when you give another polygrapher a test that you exclude Control questions? Since the way a CQT is scored is comparison of the Controls to the Relevant's (again Kleiner) it would seem a person who is not actually deceptive on either would score as inconclusive. It would then seem the test becomes a R/I or at best a directed lie type test. I'm not trying to hammer you, just understand how you adapt the test when testing other polygraphers.
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I don't know if that helps and I know it didn't make a dent in some of the people here but again I can't help that.
Yes, it helps a little. Thanks.
-Marty