Suspects and Witnesses: Part IV Use of Polygraph in Investigations

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.

Country:

US

Genre:

Documentary

Released:

1947-08-29

Languages:

N/A

Companies:

Central Intelligence Agency (CIA)