I don’t have the firmest grasp on the way a polygraph functions, but I’ve just had this thought a lot.
Could a polygraph help people uncover repressed memories? For example if a person suspects they were being harmed as a child, but can’t remember details, could a polygraph help them get more answers? Like by asking specific questions maybe related to what a person suspects happened and detecting how they respond.
Or, is a polygraph only useful to detect truth/a lie about things someone is certain about and remembers fully?
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Extremely unlikely.
Most courts will not allow the admissions of polygraph tests because they are pretty much 50/50 at determining the truth. Meaning it’s random and doesn’t really work.
It can only test for the biological markers of you being nervous. Which *does* have a correlation with someone telling a lie. However, being hooked up to a machine and being asked questions will make you nervous as well.
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