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Yorkshire Pudding
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Actually, no. I think they can be fooled. I would love to have a lie detector test. I don't think I'd believe they work until I was proved wrong. |
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soleofsoul
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It's a tool that is not 100% accurate. a polygraph test measures things like, pulse rate, body temperature, blood pressure, perspiration and then it is up to the person conducting the test to analyze all this data weighed against the questions asked and the testers responses.
As a side note the church of Scientology uses a volt meter as tool to measure perspiration only, so they can determine how emotionally damaged you are when they ask you certain questions. |
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chloe
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Good question..........i was just watching the jeremy kyle show, sad i know, but hey! and i was thinking the same.
See the way i see it if they had real valuable evidence and truth that they really did work, why dont they use them in law cases, and helping to convict people, and the only reason i thought that they dont its because they are biast! So no i dont think they are as accurate as what people want to be! |
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Bryan
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Lie detectors do not tell anything, they just measure. Pulse, perspiration, breathing to name a few. The data is then interpreted based on known standards by the polygraph examiner. The polygraph can be beaten. It is also possible that you could be telling the truth, but ruled as lying based on nervous actions. In short it is unreliable and is not allowed as evidence in a court of law. If you have to take a polygraph be aware of one thing. The examiners are not above lying themselves. The last one I had to take I passed without problem because I was telling the truth. When the test was complete they came in and told me I failed trying to get me admit to something that did not happen. When I told them how full of it their machine was they changed the story and said I passed. |
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Graham W
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A lie detector is a machine, how can it tell the truth or lie? People are a different matter. |
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mt
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apparently they are easy to fool, thats why they are only used on the jeremy kyle show and not in courts of law |
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tee
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Not always. Lie detectors respond to the physiological changes associated when most people lie, but some people are very good at controlling their physiological changes, so I would not count on it personally. |
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tagette
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No as it is possible to train yourself to defeat them. |
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ruzle
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definitely NOT!thats absolutely LIES!I THINK IT DETECTS ITS OWN LIES! |
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Moosehound
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They are prety accurate BUT due to the way they detect "lies" they can be fooled but not easily like the TV / movies would have you believe ;O)
See http://en.wikipedia.org/wiki/Lie_detector for some more info |
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Charlene
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Yes but if in your mind you beleive your lies how can they work? |
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Ellishama
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No, because if your heart rate goes up 4 any particular reason then it says your lying? Come on wot is wrong with people - can't they just get used to the interrogation system? |
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mandy b
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being a person who doesn't lie and can't abide liars i would love to put liars on a lie detector test however some people lies so much i think they would get away with it because they really believe their own lies |
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no-one listens...
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most of the time yes |
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koolkatt
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They are supposed to be 96% accurate and that is the reason they are not used in court. What if you happened to be the 4% that it didn't work on and were sent to jail as a result?! If it was being done on a cheating partner or whatever I am sure you would have an idea yourself what the results would say as you would have evidence supporting it before they even took the test. I would like to try one just to see what would happen. I would tell the truth on something and deliberately lie on the other just to see what the results were. |
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mrwurzal
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they must as they detect lies or they could be lying and tell you lies then a lie detecter is not a lie detecter its just a lie machine that tells the truth.... confused.... I AM!! |
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naplusultra
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Nope they are inanimate machines and can't speak ;) |
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sexybum272
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these instruments do not as there knickname suggests detect lies. They can only detect whether deceptive behaviour is being displayed. There are certain physiological responses that most of us under go when attempting to deceive another person. By asking questions about a particular issue under investigation and examining a subject's physiological reactions to those questions, a polygraph examiner can determine if deceptive behavior is being demonstrated. |
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Mrs T
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I don't think lie detectors KNOW that you are telling the truth. It's something to do with your pulse quickening when you knowingly tell a lie. Trouble is, if you're good at telling lies - how do you know whether the lie detector will know?
I think not |
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pommac
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I wouldn't believe a lie detector if they were standing on a stack of bibles. Why do you think they are not admissible in a court of law? |
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Leviathan
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I think shadow meant physiological responses. The lie detectors basically measure the skin's electrical resistance (or Galvanic skin response). The reason this can be used is because people are often more tense when they're lying (especially in the face of a professional polygraph) and this causes them to perspire - which is basically what the machine measures.
However some people can stay calm and beat the machine just by staying cool. They take several controls to judge your normal response so if somene is particulary nervous and or sweaty they can take it in to account by asking questions to which they know the response - eg 'what is your name?' 'where do you live?' and such.
Also it doesnt take in to account the fact that some people who will not trigger the machine are people who believe that they're telling the truth.
They serve a purpose but their readings and conclusions should be taken with a pinch of salt. |
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Charlotte C
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I think the stats show they are 96% accurate so I would say the majority of the time they tell the truth. |
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BushRaider69
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No, a lie detector can't tell the truth, it's simply a mchine that detects variations in a susects physiology and metabolism. They DO detect lies though, but as they are fairly simple machines, they can't "tell" you anything. |
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Mr Cynical
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they dont really detect the truth but adverse or unusual reaction to questions. you can fool lie detectors if you are either clever or stupid enough. if you truly believed you were the queen of England and were asked a question regarding this , there would be no reaction as you would not consider it a lie |
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Lance G
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The question is flawed. Lie detectors are incapable of lyiing, which would suggest that it makes a decision. Computers don't think. The question should be whether or not they accurately measure what they are supposed to. What if someone genuinely believes that they did not commit a crime they did commit? They would not have a measureable reaction. So, even if the detector were working, the technician's interpretation would still be innaccurate, even if he did everything right. How often does that happen, though? We don't know. So, the answer is we really don't know.
HJ (hjhop.blogspot.com) |
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Shadow
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You can very easily fool lie dectors, it works off of psychological reactions to questions, thus if you can make yourself believe what you say then you can fake them out, thats why the don't work on pathological liars, they believe wahtever they're saying. So no, they don't always tell the truth. |
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Victoria M
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I'm not so sure that they detect the truth but it surely detects a faster heart beat etc so thus believing that if the heart beats faster in response to a question there is stress therefore lies... Not sure I believe in that totally. A faster heartbeat could signify someone being purely nervous? |
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ccx806
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well the one on Jeremy Kyle SHow on Itv is 96% accurate |
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charlene1984
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good question. erm yes i think they do.i would hate to think they dont as it splits people up every day. |
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