(Thinking Critically) Law enforcement officials sometimes use a lie detector to assess a suspect's responses to details of the crime believed to be known only to the perpetrator. This is known as the

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The use of a lie detector to assess a suspect's responses to details of the crime believed to be known only to the perpetrator is referred to as a guilty knowledge test. This test assumes that the guilty person will have knowledge of details about the crime that would not be known to an innocent person. The use of lie detectors, however, is controversial and its reliability is often debated.

(Thinking Critically) Law Enforcement Officials Sometimes Use a Lie Detector