What You Should Know About Lie Detectors. The simplest way to obtain evidence in court and determining the character of employees who are employed and potential ones is through the lie detector test. Generally, most people do not view the lie detector test as one of the best ways of getting information from people. On the other hand, there are those in favor of the lie detector test as it helps to easily know whether someone is lying or not. Professionals involved in the science do not like to use the term and prefer the word polygraph. Polygraphs work in such a way that it is quite easier to figure out whether someone’s saying the truth through measuring different levels of the body. The person judging is able to check out if the reaction of the body and the answers match, thus able to determine if the subject is telling the truth or not. Once an analog machine, the scribble lines on the graph has changed and now become a digital machine.
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The polygraph detector measures the respiratory rate, the heart rate, and the amount of perspiration on the finger-tips of the subject. Then the examiner will start to check out the results of the test and study any differences in the results of the behavior. The subject at hand has wires and tubes closely going through from the machine to the subject in question. The professional examiner will immediately get to know the version of the story of the subject at hand. Nevertheless, in this process, the lie detector is not in use. The examiner uses this observation to record and monitor how the subject responds. Next, the examiner is able to set specific questions for the subject. In fact, the lie detector is able to test about 60-70% on questions that will allow the user to answer yes or no. Honestly, the test is an exact science as described by many who purchased. Many people suggest that the people who conduct the interview should take into account their subjects cultural background, religious beliefs etc. Contention. Many argue against the lie detector stating that there are both false positives and negatives with the test. A good example of a false positive is where someone tells the truth but the detector detects it as a lie while a false negative is where someone tells a lie but the detector detects it as the truth. Some say that there’s a simple way to beat the machine by doing stuff like biting one’s lip when a question is asked. Another problem noticed by many is the inconsistency levels in polygraphs. Well, become an examiner is not hard though the state you are determines whether you’re going to be trained or just be an examiner straightaway.