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Science Myths A Lot of People Still Believe & The Strange Story of the Polygraph

Something You Should Know

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What Is a Polygraph?

Studies show that as individuals we can tell when someone's lying about 54% of the time, so it's only slightly better than just human intuition. It's not really possible to assess how accurate the polygraph is when it comes to criminal investigations because you never actually know what really happened. Say someone gets found guilty with the polygraph then gets found guilty by a jury and gets sent to prison. That doesn't necessarily mean they were guilty. So you can never really know. Or you can really tell is that in this case the polygraph agreed with the jury, but the jury's are fallible as well.

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