There are many such tests in medical science, by which almost everything can be known about a person. Polygraph test is done to know whether a person is speaking the truth or a lie. In Kolkata, six people including Sanjay Roy, accused in the rape-murder case of a trainee doctor, will undergo polygraph test. But do you know that the court does not consider the report of polygraph test as valid? Today we will tell you how a polygraph test is conducted. what is a polygraph test Now first of…
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