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John Augustus Larson (11 December 1892 – 1 October 1965) was a Police Officer and Forensic Psychiatrist and became famous for his invention of the modern polygraph device used in forensic investigations. He was the first American police officer with an academic doctorate and to use the polygraph in criminal investigations.
Feb 2, 2019 · John Augustus Larson, a medical student and officer at the Berkeley Police Department in California, invented the cardio-pneumo psychogram in 1921, a device that monitored systolic blood pressure and breathing depth, and recorded it on smoke-blackened paper.
Dec 11, 2013 · John Augustus Larson, a Nova Scotia-born police officer with a PhD in physiology, made a name for himself hunting for liars. Today, the inventor of the modern lie detector would have been 121...
The lie detector—or polygraph machine–was first created by John Augustus Larson (1892-1965), a part-time employee of the Berkeley Police Department who was earning his Ph.D. in physiology at the University of California at Berkeley in 1920.
Jul 31, 2019 · Against this backdrop, John Augustus Larson, a rookie cop who happened to have a Ph.D. in physiology, read Marston’s 1921 article “Physiological Possibilities of the Deception Test” [PDF ...
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In 1921, John Augustus Larson, a medical student and police officer in Berkeley, California invented a machine to help detectives determine if someone was telling the truth – or lying. He called it – the Polygraph.
May 22, 2017 · John Augustus Larson was the inventor of the modern polygraph. Although, some list the polygraph as one of the greatest inventions, many scientists consider it to be pseudoscience. Yet, many countries continue to use the polygraph test as an interrogation test on suspects and for screening new employees.
