Polygraph machines, also known as lie detectors, are used a lot to determine if someone is lying. The strange thing is they don't actually work.

Find out why on today's episode of Facts-Chology!

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Sources

https://checkmylists.com/society/criminals-who-passed-polygraph

https://americacomesalive.com/invention-polygraph/

https://www.cvsa1.com/press-releases/killer-passes-polygraph-innocent-man-fails-killer-goes-on-to-kill-again/

https://alumni.berkeley.edu/california-magazine/spring-2010-searchlight-gray-areas/truth-machine

https://www.smithsonianmag.com/science-nature/detecting-lies-147115783/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4873061/

https://www.nytimes.com/2007/03/02/books/02book.html

https://spectrum.ieee.org/tech-history/heroic-failures/a-brief-history-of-the-lie-detector

https://scholarlycommons.law.northwestern.edu/cgi/viewcontent.cgi?article=2844&context=jclc

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