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Polygraph. Polygraph The polygraph test is one of the most controversial
criminal investigative techniques of all-time. From the ...
... Title: The Polygraph Speaker: Neil Thesis: To inform my audience about
polygraphs, the polygraph tests, and the controversy of them. ...
... A polygraph is an instrument that simultaneously records changes in physiological
processes such as heartbeat, blood pressure, respiration and electrical ...
... With instruments such as the polygraph, that are applied to assess psychological
states of an individual for a specific stimulus, the most technically reliable ...
... Key Point 6: Polygraph Testing in the Workplace Polygraphs were used in many
companies until 1989. Many people had different perspectives ...
Submitted by donald33 on April 2, 2007
Category: Psychology
Words: 2236 | Pages: 9
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Polygraph
The polygraph test is one of the most controversial criminal investigative techniques of all-time. From the initial years of the invention to today, there is not a consensus about the investigative tool. That is why there are many people for and against the administration of polygraph tests. Therefore, in order to develop a clear picture of the polygraph test the history of the test must be established. Although, there are many sources that have well documented concerns about the invention, the polygraph test is still around after almost 80 years.
William M. Marston invented the first lie detector around 1917. He claimed to be able to detect verbal deception by using a machine to measure an increase in systolic blood pressure. (Britannica) His invention was a landmark event, but the honeymoon did not last long. Six years after the invention, Marston took a big hit on his newly developed machine. His procedure was negatively evaluated in 1923 in a landmark court case known as Frye V. United States. (Frye v. US) In the case Thomas T. Frye told the court about a positive evaluation on the polygraph test that was administered to him. He asked them if the polygraph examiner would be able to take the stand in order testify to the events that took place during the polygraph exam. The court said no to the request of the polygraph examiner testifying to the results of the examination. This case would become a landmark event in the area of criminal investigation. The case established what is now called the "Frye Test." This test applies to the testimony of expert witnesses and it requires that the testimony must, "sufficiently established to have gained general acceptance in the particular field in which it belongs."(Frye Test) This test that was established by the court was not the last but it did set the stage for the continuing saga of the polygraph.
After the primary stages of the invention of the polygraph test there have been many...
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