Normal Topic question on countermeasures and control questions (Read 1934 times)
Paste Member Name in Quick Reply Box Edward

question on countermeasures and control questions
Apr 8th, 2001 at 8:55am
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My first question is do you use the countermeasures during the stim test?  And also, should I really use countermeasures on control questions such as:  are you trustworthy? or Are you a dishonest person? Do I really want them to think that I am lying about these questions or have some type of guilt with these questions?
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Paste Member Name in Quick Reply Box George W. Maschke
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Re: question on countermeasures and control questi
Reply #1 - Apr 8th, 2001 at 10:53am
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During the "stim test," by augmenting one's physiological responses while denying (per the polygrapher's instructions) having selected the number one actually chose, one can help to create the impression in the polygrapher's mind that one is a "good responder." During the stim test, it would be counterproductive to augment physiological responses while answering questions about numbers other than the one actually selected.

With regard to "control" questions like, "Are you trustworthy?" it is important to bear in mind that the polygrapher expects that persons who are answering the relevant questions truthfully will produce stronger physiological responses to such "probable-lie control" questions than to the relevant questions: it is expected that even truthful persons will have some concerns about whether their answers to such questions are completely truthful, and that those concerns will result in physiological responses. The way to pass the "test" is to make sure that one's physiological responses while answering the "control" questions are greater than any physiological responses which may occur while answering the relevant questions.

For further reading on "control" questions, I refer you to Chapter 3 of The Lie Behind the Lie Detector and to Chapter 8 of David T. Lykken's A Tremor in the Blood: Uses and Abuses of the Lie Detector (New York: Plenum Press, 1998).

George W. Maschke
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