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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. Generally, most people do not view the lie detector test as one of the best ways of getting information from people. 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. Most professionals in science prefer the term polygraph than lie detector test. The polygraph works in a way that it measures the levels of the body with aim of trying to figure out if someone’s telling the truth or not. 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. The machine, once an analog machine, has now changed over the years to be a digital one.
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The polygraph detector easily detects the respiratory rate, heart rate, and amount of perspiration through the finger-tips of the person at hand. 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. 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 subject is able to be recorded and observed by the examiner. Next, the examiner is able to set specific questions for the subject. Luckily, the lie detector is able to test about 60-70% on questions that require yes and no answer. Honestly, the test is an exact science as described by many who purchased. However, many argue that the subject’s cultural background, religious beliefs should be taken into account and thus only questions that will elicit biological responses to be asked. Controversy. Frankly, most people argue that the lie detector has both false positive and negatives. 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 hack where someone can bit their lip each time a question is posed. 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.