Lie Detector

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Lie Detector
By Lisa Zahray
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A lie detector is a machine that can tell if a
person is lying or not.
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John Larson invented the lie detector in 1921.
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Its uses are its used in police interrogation
and investigation since 1924,and other people use
it to tell if a persons lying or not.
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Now it is no mystery if someones lying or not.
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Did you know that the polygraphs (lie
detectors) test results can not be used in court?
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THE END