Polygraph Special Topics

Lie detection is an activity to identify lies. The word "polygraph" comes from "polygraph"; the original text of "polygraph" is Polygraph, which is literally translated as "multiple recorder". It is an instrument that records multiple physiological reactions. It can be used to assist interrogation in criminal investigations to understand the psychological status of the suspect being questioned, thereby determining whether he or she is involved in a criminal case. Since the real criminal suspects will often deny involvement in the crime and lie, it is commonly known as "lie detection". To be precise, "lie detection" does not measure the "lie" itself, but measures changes in physiological parameters caused by psychological stimulation. Therefore, "lie detector" should be scientifically and accurately called "multi-parameter psychological test", and "lie detector" should be called "multi-parameter psychological tester".
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Polygraph Special Topics

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Lie detection is an activity to identify lies. The word "polygraph" comes from "polygraph"; the original text of "polygraph" is Polygraph, which is literally translated as "multiple recorder". It is an instrument that records multiple physiological reactions. It can be used to assist interrogation in criminal investigations to understand the psychological status of the suspect being questioned, thereby determining whether he or she is involved in a criminal case. Since the real criminal suspects will often deny involvement in the crime and lie, it is commonly known as "lie detection". To be precise, "lie detection" does not measure the "lie" itself, but measures changes in physiological parameters caused by psychological stimulation. Therefore, "lie detector" should be scientifically and accurately called "multi-parameter psychological test", and "lie detector" should be called "multi-parameter psychological tester".