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Bookmark or Share- 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.
- Lie detectors: Why they don't work, and why police use them anywayThe FBI gives a polygraph test to every single person who's considered for a job there. When the DEA, CIA, and other agencies are taken into account, about 70,000 people a year submit to...
- The Truth About Lie Detectors (aka Polygraph Tests)The instrument typically used to conduct polygraph tests consists of a physiological recorder that assesses three indicators of autonomic arousal: heart rate/blood pressure, respiration, and skin conductivity. Most examiners today use computerized recording systems.
- How Does a Lie Detector (Polygraph) Work? - HowStuffWorksThe goal of a lie detector is to see if the person is telling the truth or lying when answering certain questions. When a person takes a polygraph test, four to six sensors are attached to him.
- Home - American Polygraph AssociationDedicated to Evidence-Based Science & Practices. Established in 1966, the American Polygraph Association (APA) is the world's leading association dedicated to the use of evidence-based scientific methods for credibility assessment.
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