lie detector test


Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.

lie detector test

n. a popular name for a polygraph which tests the physiological reaction of a person to questions asked by a testing expert. A potential or actual criminal defendant or possible witness cannot be forced or ordered to take a lie detector test. Some habitual liars pass lie detector tests, and innocent, honest people fail them due to nervousness and other factors. However, law enforcement authorities usually believe the results, which occasionally exonerate (clear) a suspect. Since the results are sometimes unreliable, they are not admissible in a trial and may not be referred to. (See: polygraph)

References in periodicals archive ?
From people who have a nagging feeling that someone is lying to them, to those who need to prove their innocence, the experienced professionals at UK Lie Detector Test are ready and willing to help.
Mullins has carried out lie detector tests in English prisons but this has been his only work in a J Scots jail.
Asked if Armstrong would take a lie detector test himself, Herman said: "We might do that, you never know.
Last night, on the ITV Wales current affairs programme Wales This Week, it was revealed that a lie detector test undertaken by Mr O'Brien two weeks ago had cleared him of any involvement in the murder of the newsagent.
Last night, an ITV Wales documentary revealed that a lie detector test undertaken by Mr O'Brien two weeks ago had cleared him of any involvement in the murder of Mr Saunders.
S: Before any taxpayers' money is spent or given away as legal aid, a lie detector test should be compulsory for both criminal and civil cases.
One person suggested, "When they give you the lie detector test, they will ask if you have ever taken a pencil home from work.
Marque Clark, 31, was arrested Monday night after failing a lie detector test and confessing to the rape, said Capt.
Never one to slough off publicity, Marston even appeared in a 1938 Gillette razor blade advertisement that used a lie detector test to discover men's "true" feelings about various shaving aids.
Even after he passed a lie detector test, the school refused to reverse his expulsion and denied him access to special education materials and tutoring.