While a polygraph test is often referred to as a lie detector,in truth it should be called a(n)__________ detector.
A) truth
B) facial feature
C) brain-wave change
D) emotions

Question

Quizplus · Accepted Answer

Polygraph tests measure physiological responses such as heart rate, blood pressure, respiration, and skin conductivity, which can change due to emotional responses. They do not directly detect lies but rather the emotional reactions that may accompany lying.

While a Polygraph Test Is Often Referred to as a Lie