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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No. I’ll tell you a secret.
Polygraphs are bogus and polygraph “experts” know it. They are an interrogation tool. Polygraphs only “work” when the device indicates stress during a line a questioning and the polygraph expert asks clarifying questions which motivates the subject to reveal that they lied or were not fully truthful in the pre-polygraph questionnaire.
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