What are some problems with law enforcement agencies using polygraph machines to detect lies and deception? What other technologies are researchers trying to use to measure the physiological signs of lying?
What will be an ideal response?
Answer: A good answer will include the following key points.
• Most psychological scientists regard polygraph tests as invalid because no physiological patterns of autonomic arousal are specific to lying.
• The polygraph produces frequent false positives. That is, innocent people are thought to be lying.
• Some guilty people, on the other hand, can pass the test.
• Researchers are trying to identify other means of lie detection, such as computer voice stress analyzers and fMRIs.
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