Polygraph Test Definition, History & Accuracy

Discover the truth about polygraph tests and how nervousness can affect the results. The video explores the possibility of false positives and negatives, and reveals the preferred outcome in the polygraph world. Have you ever taken a polygraph test? #polygraph #Investigationhomicide #Mississippicrime #truecrimepodcast | Investigation: Homicide

Scale Your Story Branding & Marketing 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 alway