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