|
John Augustus Larson was a Police Officer for Berkeley, California, United States, and famous for his invention of modern polygraph used in forensic investigations.〔Bellis, M. (Police Technology and Forensic Science: History of the Lie Detector or Polygraph Machine ).About.com Inventors.〕 He was the first American police officer having an academic doctorate and to use polygraph in criminal investigations.〔Carlsen E (2010). (Truth in the machine ). ''California Magazine'', Cal Alumni Association, Berkeley〕〔Gordon, N. J. (2008). (Today's Instruments for Truth Testing ). ''The Police Chief'', vol. 75, no. 9.〕 After a famed career in criminal investigation, he died of heart attack in Nashville, Tennessee at the age of 72.〔(Milestones on Time magazine )〕 ==Early life and career== Larson was born in Shelburne, Nova Scotia, Canada, of Nordic 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 with a thesis on fingerprint identification. This work inspired his interest in forensic science and led him to the University of California, Berkeley, where he obtained a Ph.D. in physiology in 1920.〔Alder, K (2007). (''The Lie Detectors: The History of an American Obsession'' ). Free Press, Simon and Schuster, Inc, pp. 23-25. ISBN 0-7432-5988-2〕 Having done moonlighting work as a student for the Berkeley Police Department, he joined the force in 1920. His great insight was to integrate a test for blood pressure, developed by William Moulton Marston, with measurements for pulse, respiration and skin conductivity, to make a comprehensive lie detection tool. He was also highly encouraged by his police chief August Vollmer. At the time of the invention of the polygraph, aged 21, Larson was a medical student at the University of California, Berkeley. He later entered the field of forensic psychiatry. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「John Augustus Larson」の詳細全文を読む スポンサード リンク
|