MOTIVATION EMOTION AND STRESS
MOTIVATION AND EMOTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The polygraph shows error rates up to 50%
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The polygraph can detect subtle physiological differences between arousal due to anxiety vs. excitement
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A person can “beat” a polygraph.
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Newer forms of lie detection methods do not have shortcomings like the polygraph.
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Detailed explanation-1: -The correct answer is Option B. A person can be taught how to beat the test.
Detailed explanation-2: -Polygraph testing is easily gamed by countermeasures like controlling your breathing, anxiety, using pain, etc., and even by being nice to the person doing the testing (see Wikipedia, “Polygraph").
Detailed explanation-3: -There have been several reviews of polygraph accuracy. They suggest that polygraphs are accurate between 80% and 90% of the time. This means polygraphs are far from foolproof, but better than the average person’s ability to spot lies, which research suggests they can do around 55% of the time.
Detailed explanation-4: -The most correct answer to this question is provided by option B: polygraph tests can tell the difference between lying, fear, and anxiety. To elaborate, a polygraph test can not differentiate between lying, fear, and anxiety. That is the main problem of the test.