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Bookmark or Share- Polygraph - WikipediaA polygraph, often incorrectly referred to as a lie detector test, [1][2][3] is a pseudoscientific [4][5][6] device or procedure that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity while a person is asked and answers a series of questions. [7] .
- How Lie Detectors Work - HowStuffWorksPolygraphs, commonly called "lie detectors," are instruments that monitor a person's physiological reactions. These instruments do not, as their nickname suggests, detect lies. They can only detect whether deceptive behavior is being displayed.
- The Truth About Lie Detectors (aka Polygraph Tests)So-called "lie detection" involves inferring deception through analysis of physiological responses to a structured, but unstandardized, series of questions.
- Lie detectors: Why they don’t work, and why police use them ...When the DEA, CIA, and other agencies are taken into account, about 70,000 people a year submit to polygraphs while seeking security clearances and jobs with the federal government. Polygraphs...
- Lie detector | Definition, Accuracy, & Facts | Britannicalie detector, instrument for recording physiological phenomena such as blood pressure, pulse rate, and respiration of a human subject as he answers questions put to him by an operator; these data are then used as the basis for making a judgment as to whether or not the subject is lying.
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