When a lie detector test machine is testing a person, specific signals of the body are measured by the sensors. The sensors are attached to different areas of the person who is undergoing the lie detector test. The sensors pick up different body signals, such as the heart rate, perspiration, and blood pressure. Along with these, there are also several other physiological factors recorded by the sensors. All the multiple signs of the body are accurately recorded by the sensors in a moving paper, also known as the graph.
Thus, the sensors in a lie detector test machine accurately record what it’s meant to record. In this sense, it can be said that a lie detector test prices accurately detects what it was created for detecting. The lie detector machine can detect very accurately whenever the person who is undergoing a lie detector test is feeling excited or nervous. After recording, it is up to the examiner or questioner to decide if the person is telling the truth or lying. The examiner decides this by observing the graph on which the multiple signals are recorded.
In a lie detector test, the examiner usually starts by asking the person a few very basic simple questions. Such questions consist of two types. In the first type of question, the person is expected to answer truthfully. In the other type, the person undergoing the test is likely to lie while answering the question asked. Asking such questions allow the examiner to know the multiple signals the person shows while lying or telling the truth. This can be used later on while asking relevant questions by the examiner.
Although the lie detector test machine is reasonably accurate, it is essential to note that it is possible to manipulate the outcome of the test. With proper training, an individual can control the body’s signals, which is received by the sensors even while lying. Such actions can lead the examiner to think that the person is telling the truth while the person is lying. The nervousness that a person feels while taking the test can also be sometimes interpreted as signals of lying. Thus, while conducting such a test, one has to consider the fact that there is always the possibility of making errors.
However, the absolute most important matter to remember while conducting a lie detector test is to select the issues really attentively. Putting the wrong type of concerns may mislead the man or woman who’s undergoing the lie detector test. In the event the examiner asks the incorrect sort of queries concerning the person, then then there is the chance of the system depicting the clear answer replied by the person as lying. Thus, in such situations, even if the person answers frankly, the man has been shown to be more lying from the lie detector apparatus.