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 HDToday. 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
- Director:
- Cast:
