Lie detection, also referred to as polygraph, is a pseudoscientific technique used to assess the veracity of an individual’s statements through physiological responses. It is based on the assumption that lying induces physiological changes, such as increased heart rate, respiration, and perspiration, which can be detected by a polygraph machine.
The use of lie detectors has been controversial since its inception, with critics arguing that it is unreliable and susceptible to deception. Despite its limitations, lie detectors are still used in some contexts, such as criminal investigations and pre-employment screening.
