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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. Sadly, most people do not consider the lie detector test as the best form of getting evidences and determining character. Besides, there are those convinced that the lie detector test is the best way to go as it makes it easier for someone to know if the subject at hand is telling the truth or not. Professionally, many consider the term polygraph over lie detector test. 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 simply checks out the reaction as the person is answering the question to determine if the subject is engaging in deception. The machine has evolved over the years from a scribble lines on the graph to a digital one.
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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. Next, the examiner will begin to evaluate the test of the test and study any difference 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. Knowing the version of the story of the subject becomes easier in such cases. In this stage of the process, the lie detector is not used. The examiner uses this observation to record and monitor how the subject responds. The next stage involves setting questions by the examiner for the subject. Luckily, the lie detector is able to test about 60-70% on questions that require yes and no answer. Frankly, the test follows suit in the case of an exact science and is much appreciated by many who are well trained in the process. Regardless of this, most people argue that subject’s cultural background, religious beliefs should be taken into account and thus only ask target questions. Disputation Well, many people defer that the lie detector has both false negative and positives. 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. People say that there’s a way to beat the machine by doing something like biting their lip each time a query is asked. Many believe that the polygraph shows inconsistent answers. There are states that allow anyone to become an examiner while others deny till one has undergone training and been certified.