A major problem with using the polygraph as a lie detector is that

Question

Quizplus · Accepted Answer

The polygraph, while used in various security and investigative contexts to detect deception, is not infallible. Research has shown that it can indeed make mistakes, as it measures physiological responses (like heart rate, blood pressure, and sweating) that can be triggered by a variety of factors, not just lying. This can lead to false positives (where truthful individuals are wrongly identified as lying) and false negatives (where deceptive individuals are not detected).

A Major Problem with Using the Polygraph as a Lie