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AntiPolygraph.org Message Board › Polygraph and CVSA Forums › Polygraph Procedure › GSR electrode attachment

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GSR electrode attachment (Read 6320 times)

00 New User Offline Posts: 3 Joined: Sep 10^th, 2001	GSR electrode attachment Sep 11^th, 2001 at 6:10am	Mark & Quote Quote Print Post
	Regarding the attachment of the electrodes / conductors for the GSR: Does anyone have any experience with examiners checking or cleaning the fingers prior to attachment? Have you ever heard of this? Would they likely discover a chemical agent that supresses sweat gland activity (well beyond anti-perspirant)? Would that do any good? ( naut x naut west


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beech trees God Member Offline Posts: 593 Joined: Jun 22^nd, 2001 Gender:	Re: GSR electrode attachment Reply #1 - Sep 11^th, 2001 at 6:20am	Mark & Quote Quote Print Post
	00 wrote on Sep 11^th, 2001 at 6:10am: Regarding the attachment of the electrodes / conductors for the GSR: Does anyone have any experience with examiners checking or cleaning the fingers prior to attachment? Have you ever heard of this? Would they likely discover a chemical agent that supresses sweat gland activity (well beyond anti-perspirant)? Would that do any good? Both 'The Lie Behind The Lie Detector' and 'How To Sting The Polygraph' suggest that such attempts do more harm than good, or are at least ineffective. I too would like a good GSR discussion as it seems to be the one tracing in which the examinee has little or no control.

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wannabe Ex Member	Re: GSR electrode attachment Reply #2 - Sep 11^th, 2001 at 6:29am	Mark & Quote Quote Print Post
	I would think, and this may be completely wrong, but I feel that if the examinee is comfortable with his or her knowledge of the polygraph and it's shortcomings the GSR would be less reactive? Confidence would have to have some affect I would think. Anyone agree?


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Pseudo Relevant New User Offline Pull my finger, not my leg. Posts: 22 Joined: Aug 14^th, 2001	Re: GSR electrode attachment Reply #3 - Sep 12^th, 2001 at 4:39pm	Mark & Quote Quote Print Post
	00 wrote on Sep 11^th, 2001 at 6:10am: Does anyone have any experience with examiners checking or cleaning the fingers prior to attachment? Polygraphers routinely check the examinee's fingertips for anything that may affect "good" contact with the skin. Mostly this would be superglue or other adhesive material that blocks the contact. As far as other "chemicals", I do not know what if anything a polygrapher would look for (as far as the GSR goes).

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00 New User Offline Posts: 3 Joined: Sep 10^th, 2001	Re: GSR electrode attachment Reply #4 - Sep 14^th, 2001 at 7:42am	Mark & Quote Quote Print Post
	Thank you. The question is directed at the use of a certain chemical which locally supresses all sweat gland activity. Is the finger inspection strictly by inspection, is it by wiping the fingers to clean them, or possibly a swipe test for any chemical agent? What would an examiner likely do or suspect if there is no GSR response? ( naut x naut west


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00 New User Offline Posts: 3 Joined: Sep 10^th, 2001	Re: GSR electrode attachment Reply #5 - Sep 14^th, 2001 at 7:48am	Mark & Quote Quote Print Post
	Add:Testing with a biofeedback unit shows virtually no response change from sedate to excited states. ( naut x naut west


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wannabe Ex Member	Re: GSR electrode attachment Reply #6 - Sep 14^th, 2001 at 8:44am	Mark & Quote Quote Print Post
	I would expect that if there were no GSR responces at all the examiner would suspect either that the polygraph equipment was not operating properly, or that the examinee were using some sort of chemical countermeasure. either way you'll lose. I am not an expert, but common sense would tell me that something was wrong, (besides the fact that polygraph is hokey anyway), if there were no readings at all.


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George W. Maschke Global Moderator Online Make-believe science yields make-believe security. Posts: 6211 Joined: Sep 29^th, 2000	Re: GSR electrode attachment Reply #7 - Sep 15^th, 2001 at 4:30pm	Mark & Quote Quote Print Post
	00 wrote on Sep 11^th, 2001 at 6:10am: Regarding the attachment of the electrodes / conductors for the GSR: Does anyone have any experience with examiners checking or cleaning the fingers prior to attachment? Have you ever heard of this? Would they likely discover a chemical agent that supresses sweat gland activity (well beyond anti-perspirant)? Would that do any good? ( naut x naut west Polygrapher James Allen Matte writes at p. 383 of Forensic Psychophysiology Using the Polygraph (J.A.M. Publications, 1996): Quote: A standard anti-countermeasure employed by this author is to routinely have the examinee wash his or her hands thoroughly with soap and water in the presence of the forensic psychophysiologist before commencement of the testing phase. Note that effective polygraph countermeasures involve augmenting physiological responses to the so-called "control" questions rather than suppressing responses to relevant questions. See Chapter 4 of The Lie Behind the Lie Detector and the sources cited there for further reading.

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