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 primarily based on the belief that mendacity induces physiological modifications, akin to elevated coronary heart fee, respiration, and perspiration, which could be detected by a polygraph machine.
Using lie detectors has been controversial since its inception, with critics arguing that it’s unreliable and vulnerable to deception. Regardless of its limitations, lie detectors are nonetheless utilized in some contexts, akin to legal investigations and pre-employment screening.
