Which of the following is true regarding lie detectors?
A) Lie detectors are accepted as valid evidence in most U.S. courts, but not in other countries.
B) Research suggests that traditional polygraphs are about 78% accurate as lie detectors.
C) Polygraphs are able to detect arousal, but are not valid indicators of lying.
D) Researchers have been unable to identify any potential lie detector replacements for the polygraph.

Question

Quizplus · Accepted Answer

Polygraphs measure physiological responses such as heart rate, blood pressure, and perspiration, which can indicate arousal or stress. However, these responses can be triggered by a variety of emotions, not just lying, making polygraphs unreliable as definitive indicators of deception.

Which of the Following Is True Regarding Lie Detectors