Author : Bhuvanesh.K 1
Date of Publication :7th December 2016
Abstract: The ability to detect when someone is lying is a skill that fascinates us all. On the quiet, many of us like to think of ourselves as amateur lie detectors. A polygraph popularly referred to as a lie detector. The polygraph was invented in 1921 by John Augustus Larson, a medical student at the University of California at Berkeley and a police officer of the Berkeley Police Department in Berkeley, California. It is commonly used by law enforcement and has historically been an inexact science. There are a wide variety of technologies available for this purpose. The most common and long used measure is the polygraph, which is considered by the U.S. National Academy of Sciences to be unreliable. A polygraph, popularly referred to as a lie detector, measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions The belief underpinning the use of the polygraph is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers. This document study on lie detection.
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