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Bookmark or Share- Are Lie Detector Tests Reliable? Here’s What Science SaysWhat is a Lie Detector Test? A lie detector test, also known as a polygraph, is a device and procedure that can (allegedly) detect when someone’s lying while answering questions by picking up on a variety of physiological indicators in the body. Specifically, polygraphs monitor: Your heart rate (Is your heart racing like you just ran a marathon?)
- 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: Sometimes a polygraph will also record things like arm and leg movement.
- 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.
- 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 Frequently Asked QuestionsWhat is a polygraph? The term "polygraph" literally means "many writings." The name refers to the manner in which selected physiological activities are simultaneously recorded. Polygraph examiners my use conventional instruments, sometimes referred to analog instruments, or computerized instruments.
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