The effectiveness of the lie detector as a method of assessing deception rests on the somewhat questionable assumption that ___________.
A)specific hormone levels increase when someone is lying
B)the brains of people who are lying are more active
C)specific lower brain structures become more active when someone is lying
D)people have less control over their physiological responses than they do over other behaviours

Question

Quizplus · Accepted Answer

The effectiveness of lie detectors (polygraphs) is based on the premise that when people lie, they exhibit physiological responses (such as changes in heart rate, blood pressure, and sweating) that they cannot easily control, unlike their ability to control verbal responses or facial expressions. This is why option D is correct.

The Effectiveness of the Lie Detector as a Method of Assessing