Polygraph Test (Lie Detection)

Lie detector tests have become a popular cultural icon — from crime dramas to comedies to advertisements — the picture of a polygraph pen wildly gyrating on a moving chart is readily recognized symbol. But, as psychologist Leonard Saxe, PhD, (1991) has argued, the idea that we can detect a person’s veracity by monitoring psycho physiological changes is more myth than reality. Even the term “lie detector,” used to refer to polygraph testing, is a misnomer. So-called “lie detection” involves inferring deception through analysis of physiological responses to a structured, but unstandardized, series of questions.