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Yes and no. What polygraph machines do is monitor specific biological functions such as pulse and skin temperature. The polygraph operator asks a series of test questions with known answers to esatblish a baseline for the subject. When humans lie there are a few typical responses, such as an elevated pulse. The polygraph operator decides whether or not the subject has responded honestly or not based on the changes in the measured functions.
Wiki User
∙ 16y ago
Wiki User
∙ 7y agoIn perfect conditions the polygraph is accurate, but if the individual taking the test is excessively nervous, has high blood, pressure, and other numerous conditions can throw the test off.
Because of this, the polygraph test is not admissible in court.
Wiki User
∙ 12y agoyes because it would tell the truth if a guy is lieing
** NEW ANSWER **
A polygraph instrument is a machine and can not tell the truth or tell a lie. In the hands of an experienced examiner, the polygraph collects data during a highly structured series of questions and can establish from that data the probability that a person is being intentionally deceptive (lying) to a question or questions.
- Michael Martin (President, Global Polygraph Network)
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Why were lie detectors made?
To detect when people lie.
If in whole country lie detectors are kept What would happen?
All will tell lie.
Where can one find more information about lie detectors?
More information about lie detectors can be found from reputable sources such as government websites, academic research papers, and psychology publications. Some organizations, such as the American Psychological Association or the American Polygraph Association, may provide information and resources about lie detectors and their use. Additionally, books and articles written by experts in the field can offer in-depth knowledge on the topic.
What are the principle of operation of lie detector?
Lie detectors, or polygraph machines as they're more officially known, are large contraptions that are filled with buttons, levers, paper, and measuring devices. They have been used for years in law enforcement to detect whether or not someone is actually lying to officials. The reason why people would lie to law enforcement officials is obvious - they committed a crime that they don't want to get caught for. Lie detectors can help solve this problem by asking a person who's strapped to a lie detector several questions and then analyzing the results. However, lie detectors still aren't permissible in court. This means that should a person fail a lie detector, they will not be able to be proven as lying in a court of law. And likewise, a person will not be able to use the results of a lie detector test to prove that they are telling the truth. This is because lie detectors can't actually detect if a person is lying. They can only tell if the person is displaying deceptive behaviour.
What is a lie detector used for?
Lie detectors are used in law and legal issues to try to determine if someone is telling the truth or not.
What is used by employers to make sure you were telling the truth on your resume?
lie detectors
What church raised millions selling members electropsychometer lie detectors?
Dayy
How do Lie Detectors tell if someone is telling lies?
First off, lie detectors are not real. The closest thing to it would be a polygraph test, and that does not determind if one is lying. The test measures certain physical characteristics (such as heartrate, blood pressure, skin conductivity, respiration, to name a few) and determines if any of those change upon the testee being asked a question. This, combined with an experienced examiner, can help determine if the testee is lying; though it can not say so for certain.
What are the best answers to the McDonald's personality test?
The true ones that apply to your actual personality. It won't help either you or McDonald's to lie on your test.
When was True True Lie created?
True True Lie was created in 2006.
Are there such things as lie detectors?
yes, that's what cops use. but The ones that they sell in stores don't work at all.
What has the author Travis B Patterson written?
Travis B. Patterson has written: 'Lie detection via the polygraph' -- subject- s -: Forensic psychology, Lie detectors and detection
