Lie detection, additionally known as polygraph, is a pseudoscientific approach used to evaluate the veracity of a person’s statements via physiological responses. It’s based mostly on the belief that mendacity induces physiological modifications, resembling elevated coronary heart fee, respiration, and perspiration, which might be detected by a polygraph machine.
Using lie detectors has been controversial since its inception, with critics arguing that it’s unreliable and inclined to deception. Regardless of its limitations, lie detectors are nonetheless utilized in some contexts, resembling felony investigations and pre-employment screening.
