Polygraph 1921
Dec. 26, 2024
The First Polygraph: Inventor, History, Timeline, and More American Polygraph Association - On April 19, 1921, the first documented field polygraph examination of criminal suspects was conducted by Dr. John A. Larson in Berkeley, California. That date marks what may History of the Polygraph Machine Scientists Trying New Trick to Catch You in a Lie - ABC News | Polygraph 1921
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