Polygraph is a general term that refers to the use of autonomic physiological measures to make assessments about a person’s credibility. Polygraph techniques find wide application in the criminal justice and national security systems of many countries, and their use is growing worldwide. There are two major families of polygraph techniques. Knowledge approaches look for
Polygraph examiners use polygraph equipment and techniques to determine whether individuals have answered questions truthfully or dishonestly. Polygraphs, often called “lie detectors,” are instruments that measure and record certain nonvoluntary body responses that are affected by the individual’s emotional state. To judge whether the subject has answered all the questions truthfully, the examiner compares the
Polygraph is a general term that refers to the use of autonomic physiological measures to make assessments about a person’s credibility. Polygraph techniques find wide application in the criminal justice and national security systems of many countries, and their use is growing worldwide. There are two major families of polygraph techniques. Knowledge approaches look for