The polygraph was created in 1921 by policeman John Larson, based on research by the psychologist William Marston. It records changes in pulse, blood pressure, sweating and breathing to find out if someone is lying. In movies, the polygraph is always correct but, in 1998, the US Supreme Court decided that there was no agreement that the polygraph was reliable. The US National Academy of Scientists said the same thing in 2003.
Who first stated that the polygraph might not be reliable?
The Supreme Court of the United States The National Academy of Scientists The psychologist William Martson The Federal Bureau of Intelligence