Polygraph Test Definition, History & Accuracy - Video | Study.com
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Polygraph Test Definition, History & Accuracy - Video | Study.com
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SUPI on Instagram: "How accurate is a polygraph test?A lie detector, or polygraph, is a device that measures and records physiological responses like heart rate, blood pressure, respiration, and skin conductivity while a person is questioned. It operates on the theory that a person’s physical reactions will change when they are being deceptive compared to when they are being truthful. The accuracy of polygraph tests is controversial, and the results are not always considered conclusive evidence,
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