What is another word for lie detector test?
Pronunciation: [lˈa͡ɪ dɪtˈɛktə tˈɛst] (IPA) 
A "lie detector test" is also known as a polygraph test. Other synonyms include a voice stress analysis, truth verifier, deception detection, or a psychological stress evaluator. It is a means of assessing the truthfulness of a person's verbal responses to a series of questions by monitoring their physiological responses. The polygraph measures changes in the individual's blood pressure, heart rate, respiration, and electrodermal response to determine the veracity of their answers. Although it is widely used by law enforcement agencies, the validity of the polygraph test is still debated by experts in the field. Nevertheless, it remains a popular tool for investigating criminal and civil cases.
