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American inventor Leonarde Keeler testing his improved polygraph on Arthur Koehler, a former witness for the prosecution at the 1935 trial of Richard Hauptmann. A polygraph, often incorrectly referred to as a lie detector test, [1] [2] [3] is a pseudoscientific [4] [5] [6] device or procedure that measures and records several physiological indicators such as blood pressure, pulse, respiration ...
In the book Polygraph in Crime Investigation (Poligraf u kriminalistici) Zvonimir Roso explores the possibilities of application of the polygraph technique and gives a history of lie detection methods. He presents the physiological and psychological basis of polygraph examination, experimental studies of blood pressure, pulse, respiration and ...
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] He was the first American police officer with an academic doctorate and to use the polygraph in criminal investigations.
One of the earlier uses of the Keeler Polygraph was in 1937, in connection to the murder of 5-year-old Roger William Loomis in Lombard, Illinois. The subject was Grace Yvonne Loomis, the child's mother. [3] In 1938, Keeler conducted a polygraph test upon Francis Sweeney, the chief suspect in the Cleveland torso murders. Sweeney failed to pass ...
William Moulton Marston (May 9, 1893 – May 2, 1947), also known by the pen name Charles Moulton (/ ˈ m oʊ l t ən /), was an American psychologist who, with his wife Elizabeth Holloway, invented an early prototype of the polygraph.
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A Polygraph is a duplicating device that produces a copy of a piece of writing simultaneously with the creation of the original, using pens and ink. Patented by John Isaac Hawkins on May 17, 1803, it was most famously used by the third U.S. president, Thomas Jefferson , who acquired his first polygraph in 1804 and later suggested improvements ...
Chromograph, Copygraph, Polygraph; Flexography; Spirit duplicator (also Rexograph, Ditto machine, Banda machine, or Roneo) Lithographic processes Transfer lithography; Anastatic lithography; Autographic process; Offset lithography; Photolithography; Stencil-based copying methods Papyrography; Electric pen, invented by Thomas Edison; Trypograph ...