Suspects and Witnesses: Part IV Use of Polygraph in Investigations's primary photo
  • Suspects and Witnesses: Part IV Use of Polygraph in Investigations (1947)
  • Short | 26 min | Documentary, Short
Primary photo for Suspects and Witnesses: Part IV Use of Polygraph in Investigations
Suspects and Witnesses: Part IV Use of Polygraph in Investigations (1947)
Short | 26 min | Documentary, Short
This short dramatized documentary film, presented by U.S. Army, introduces use of polygraph in investigation. Polygraph is used as a lie detector that measures blood pressures, pulse, respiration, skin conductivity while suspect is asked ...See moreThis short dramatized documentary film, presented by U.S. Army, introduces use of polygraph in investigation. Polygraph is used as a lie detector that measures blood pressures, pulse, respiration, skin conductivity while suspect is asked questions and answering them. See less
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Updated Dec 31, 1947
Release date
1947 (United States)

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