Polygraphy as one of the courses in the Criminology Program is the scientific detection of deception through the use of polygraph. It is also known as lie detector test. It comes from two Greek words, “poly” and “graphos” which means “ many writings”.
A Polygraph is a device or an instrument capable of recording changes in blood pressure, pulse rates, respiration, and galvanic skin reflex as indicative of emotional excitement, especially of lying when questioned.
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