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2012-03-20 9:28 PM
in reply to: #4101225

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Subject: RE: Lie detector tests

Yes, they do.  I've had several as part of employment for, as TriRSquared put it, a specific government law enforcement agency with a 3-letter acronym.  And yes, it is NOTHING like what is depicted in media, which really annoys me.  There is absolutely no movement--no twitching noses, shifting, deep breaths, nothing.  You barely move your lips to utter "yes" or "no". 

My dad recently retired after 40 years in law enforcement, and he uses/used standard polygraph, stress analysis, voice stress analysis, and kinesic interviewing.  His take on polygraphs is the following:  "You can fool the box or the investigator, but you won't fool both."  The polygraph results were less interesting to him than the reactions and the information discussed in the interview.  In his experience, by the time they actually ran the polygraph process, the detective or investigator would already know what the results would be. 



2012-03-21 3:14 PM
in reply to: #4101508

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Subject: RE: Lie detector tests
powerman - 2012-03-18 12:19 PM

amd723 - 2012-03-18 11:03 AM We (sheriff's office) don't.  We use voice stress analysis. 

That's it. So do you use it on suspects?

They are sometimes used, but like polygraphs that are not admissible in court unless there is an agreement between the defense attorney and prosecutor.  In those cases, the voice analysis or polygraph will usually be administered after formal charges are brought. 

When I was a prosecutor, I prosecuted a guy for robbery and attempted 2 degree murder.  We had some  issue with the victim  and this guy and his attorney swore he didn't do the crime.  Offered to take a polygraph.  We agreed with the stipulation that the results were admissible in trial and that neither side could attack the credibility of the test.  He took the test and failed.  In jury selection I asked peoples' feelings about polygraphs, none were too keen on them.  We went to trial and the results were admitted.   I did not harp on the result in closing.  Guy was convicted.  As an aside, the victim problem turned around and it was the victim's testimony that really convicted the guy.  Polygraph was just an added bonus.

2012-03-21 5:40 PM
in reply to: #4101225

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Subject: RE: Lie detector tests
Interesting stuff. Thanks.
2012-03-21 7:18 PM
in reply to: #4102551

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Subject: RE: Lie detector tests

doxie - 2012-03-19 7:54 AM What sorts of questions do they ask?

Anything and everything - and I mean EVERYTHING. One line of quesioning ... "so bodhi_girl, you grew up on a farm, you're telling me you never got curious with any of the animals?" <me, mortified, NO!> ... "so .. you've never woken up to find your dog licking your ***?" <again, a mortified no> ... and then it went downhill from there. I seriously needed a shower afterwards.

Also the standard "have you ever committed x or y crimes and never gotten caught, have you ever had financial problems, are you affiliated with any gangs or clubs (despite admitting my triathlon club affiliation I still passed...)" ... etc.

2012-03-21 8:04 PM
in reply to: #4101225

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Subject: RE: Lie detector tests
Yikes. Sounds stressful. Even if you didn't, say, kill someone, I would be super paranoid that the lie detector test was faulty and said that I did.
2012-03-22 8:15 AM
in reply to: #4101225

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Subject: RE: Lie detector tests
Haven't you all ever watched Mythbusters?  They had an entire episode about "beating" the polygraph and how it can't be done.


2012-03-22 9:49 AM
in reply to: #4101225

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Subject: RE: Lie detector tests

As George Castanza once said, "It's not a lie if you believe it."


It's the first thing that popped in my head as I was reading this thread.

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