The lie detector test makes use of which of the following measures?
A)A PET scan
B)An EEG of brain activity
C)A polygraph assessing physiological responses
D)A CAT scan

Question

Quizplus · Accepted Answer

A polygraph, commonly known as a lie detector test, measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions. The belief underpinning the use of the polygraph is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers.

The Lie Detector Test Makes Use of Which of the Following