A Simple Plan: Tests

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. Professionally, many consider the term polygraph over 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 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. 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 in question is hooked up with many wires and tubes to the lie detector machine. The professional examiner is able to assess the version of the story of the subject at hand. Nevertheless, in this process, the lie detector is not in use. Observation and monitoring by the examiner is done in this stage. The next stage involves setting questions by the examiner 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. 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. Certainly, there are two kinds of states; those who allow anyone to become an examiner while others deny it till one has gone through some formal training.