Polygraph

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Title: Polygraph

Essay Details:

Subject: Psychology

Author: Jack I

Date: February 6, 2015

Level: University

Grade: B

Length: 8 / 2229

Essay text:

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...

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