Do Lie Detectors Really Work?

Do Lie Detectors Really Work? : You’ve probably seen this device before. This is a “polygraph” — which is more popularly known as a lie detector test. But just how often it can catch you in a lie is shrouded in controversy.

Regardless, thousands of polygraphs are given each year in the US, alone, for everything from government clearance screening to witness verification. And the power of these machine’s results is not taken lightly. People have reportedly lost their jobs and even reputations over a failed exam. But how exactly does this machine work, and is it really as accurate as polygraph examiners claim?

Check out the video above to find out.


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