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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. [1]
Feb 2, 2019 · John Augustus Larson was a medical student and police officer who created the cardio-pneumo psychogram in 1921, a device that measured blood pressure and breathing depth. He also worked with Leonarde Keeler, who improved the polygraph and used it to convict criminals in 1935.
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 ...
In 1921, the Chief of Police in Berkeley, Ca., asked John Augustus Larson (1892-1965), a policeman then studying at the University of California at Berkeley, to build a polygraph suitable for police work.
- Early Life and Career
- Invention of Polygraph
- Legacy
- Bibliography
Larson was born in Shelburne, Nova Scotia, Canada, to Swedish parents. His family moved to New England in his early childhood, though his parents soon divorced. He studied biology at Boston University holding down odd jobs to support himself, ranging from busboy and paperboy to stonecutter and elevator operator. In 1915, he earned a master's degree...
The instrument, with its diverse collection of physiological indices, became known as the polygraph, which Larson then fully developed for forensic use in 1921, and applied it in police investigations at the Berkeley Police Department. His instrument provided continuous readings of blood pressure, rather than discontinuous readings of the sort foun...
Larson married Margaret Taylor, the freshman victim of the College Hall case and the first person he ever interrogated on the lie detector. Over the next fifteen years, he collected hundreds of files on successful criminal cases where his polygraph solved murders, robberies, thefts and sex crimes. His instrument was nicknamed 'Sphyggy' by the press...
The cardio-pneumo-psychogram in deception.Phillips Bros., Print (1924)Single fingerprint system, (The Berkeley police monograph series). D. Appleton (1924)The use of the polygraph in the study of deception at the Ins*ute of Juvenile Research, Chicago.Dept. of Public Welfare (1927)Lying and its detection: A study of deception and deception tests (Behavior research fund. Monographs).The University of Chicago press (1932)Oct 9, 2017 · It is worth noting that John Augustus Larson, who is more accurately recognized as the primary inventor of the polygraph, himself said it was fair to call Marston the inventor of the lie...
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Jul 8, 2015 · The vast majority of early polygraph research was conducted by John Larson, who worked for the Berkley, California, police department throughout the 1920s. Berkley Police Chief August Vollmer saw Larson’s work as a means to significantly improve the effectiveness of his department, and thus allowed Larson to test and refine his polygraph ...
