Suspects and Witnesses: Part IV Use of Polygraph in Investigations
Suspects and Witnesses: Part IV Use of Polygraph in Investigations
Watch suspects and witnesses: part iv use of polygraph in investigations full movie online. 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 questions and answering them.
- Genre: Documentary
- Country: United States
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