The truth can be quite simple to state, and a person who adds way too much detail to their account may be lying. ![]() A genuine smile will usually mean that a person will show their teeth even if only a little bit. They will appear to be relaxed and happy, and their whole face will light up. When a person offers a genuine smile, it involves more than just the lower part of their face. ![]() Here are some other (non-scientific) ways to detect lies that you can be on the lookout for: If the physiological responses are more pronounced when asked the specific questions, the person is presumed to have lied when answering them. The person will pass or fail the test based on a comparison between the way he or she reacts to the questions where the subject will probably lie and the ones that are specific to the case in question. Other questions being asked are the ones to which the tester is really interested in getting answered. Some of the questions asked will be ones that the person will be expected to answer truthfully such as "Is your name Peter Finley?", while other questions are ones that most people will probably lie about such as "Have you ever stolen anything?" (The tester must be able to determine that the person was lying.) The next step is to ask the subject a series of questions. The subject will also be asked to deliberately lie so that his or her response in that kind of situation can be noted. The information taken from the interview will be used to write some control questions. The polygraph testing starts out with an interview of the person being examined.
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