Tom is interested in working for an intelligence branch of the government.A polygraph test is part of the interview process.Though Tom intends to be honest,he is worried that the polygraph will say he is lying when he is not.Tom's friend,Cameron,assures Tom that polygraph tests are infallible.Is Cameron right?
A)Yes,polygraphs pick up certain physiological responses associated with lying,and there is no way to change or hide those responses.
B)Yes,many government agencies rely on polygraphs,and they would not do so if the tests were fallible.
C)No,anxiety may cause a person's skin conductance level to increase for reasons other than lying.
D)No,polygraph machines are just props that allow the examiner to watch for cues that the subject is lying,and the examiner may make errors due to bias.

Question

Quizplus · Accepted Answer

While polygraph tests can detect physiological responses associated with lying, such as changes in skin conductance level and heart rate, these responses can also be triggered by anxiety for reasons unrelated to lying. Therefore, the tests are not infallible.

Tom Is Interested in Working for an Intelligence Branch of the Government.A