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Sense About Lie Detectors
Lie detectors mainly consist of polygraphs, voice analysis or brain imaging. These technologies are different but three points are relevant to all:
- They are not accurate.
- They do not measure lies but rather something that could be a proxy for lies.
- They all rely on the deterrent effect (that is, fear of being caught lying).
Find out more:
http://archive.senseaboutscience.org/data/files/resources/101/SA-lie-detectors-2012.pdf