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Bookmark or Share- How Does a Lie Detector (Polygraph) Work? - HowStuffWorksA polygraph is a machine in which the multiple ("poly") signals from the sensors are recorded on a single strip of moving paper ("graph"). The sensors usually record: The person's breathing rate. The person's pulse. The person's blood pressure.
- 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.
- Home - American Polygraph AssociationEstablished 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.
- 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]
- A review of the polygraph: history, methodology and current statusIntroduction. In 1983, US President Ronald Reagan issued the National Security Decision Directive 84, which authorized all federal agencies to use polygraphs (commonly known as lie detectors) to test if any of their employees had leaked classified information (Brooks, 1985; US Congress, 1983).
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