Fact check: Truth about the Cain 'lie detector'
http://dervishcom.blogspot.com/2011/12/fact-check-truth-about-cain-lie.html
A so-called lie detector featured in an ad supporting Herman Cain uses technology no more reliable than "flipping a coin," says a study. 
03 Dec, 2011
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Source: http://www.usatoday.com/news/politics/story/2011-12-03/fact-check-cain-lie-detector/51613974/1?csp=34news
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Source: http://www.usatoday.com/news/politics/story/2011-12-03/fact-check-cain-lie-detector/51613974/1?csp=34news
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