They also claim that these lie-detecting skills can be taught, making you a human lie detector machine. Dr. Paul Ekman is known around the world for his research on universal facial expressions that reveal concealed emotion. Human lie detection is as accurate as tossing a coin in the air. Does that mean that FBI agents and other law enforcement agencies rely on the polygraph for lie detection? Though they may use the polygraph as one of their tools, on its own it is not a reliable method for lie detection.

Source: Forbes June 22, 2022 16:03 UTC