What is polygraph?
What will be an ideal response?
Of the mechanical devices that have been designed to aid investigators in obtaining information, the polygraph, or “lie detector,” has proven to be of extreme value.
Proper use of this tool can help an investigator determine a suspect’s guilt or innocence. However, because of recent court rulings restricting the use of the polygraph in certain settings, the investigator should view this device as an aid only, not as a last resort or panacea. The polygraph is designed simply to measure whether or not the person being tested is being deceptive.
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