One problem with the use of the polygraph for lie detection is that
A) polygraph assessments are more expensive than brain scans.
B) anxiety,irritation,and guilt feelings all prompt similar physiological reactivity.
C) emotions involve expressive behaviors as well as autonomic nervous system arousal.
D) innocent people are presumed to be guilty at the very beginning of any lie detector test.

Question

Quizplus · Accepted Answer

The use of polygraph for lie detection is limited by the fact that many different psychological states (such as anxiety, irritation, and guilt feelings) can cause similar physiological responses, so it is possible to produce false positives or false negatives. This undermines the accuracy and reliability of using the polygraph as a tool for detecting deception.

One Problem with the Use of the Polygraph for Lie