Many Psychologists Are Opposed to the Use of Lie Detectors

question 401

Multiple Choice

Many psychologists are opposed to the use of lie detectors because

• A) they represent an invasion of a person's privacy and could easily be used for unethical purposes.
• B) there are often serious discrepancies among the various indicators such as perspiration and heart rate.
• C) polygraphs cannot distinguish the various possible causes of arousal.
• D) they are accurate only about 50 percent of the time.

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