Polygraph tests have been around for a long time now and have been constantly upgraded with today’s latest technological advancements to cater to the modern times as well as making the lie detector test provide more accurate data, but what is the lie detector test used for? Basically the name says it all; it is a device that can detect lies told by a person by asking specific yes or no questions. This person is strapped to the device which detects that person’s heart rate among other things, which is then transcribed by a licensed polygraph examiner.
Examiners themselves have a lot to go through before being certified as they have quite an important role to play. They undergo regular training and re-training from time to time to keep up with new systems and processes as well as they have to graduate a polygraph school before being made into a licensed examiner. The machine, no matter have technologically advance it is, is only as good as the person handling it therefore both man and machine need to be in sync. As for purpose of use, there are a lot of uses for the lie detector test, try checking out liedetectortest.com for more information about the subject.
Reliability and accuracy
As said above, the machine is only as good as the examiner and in that context, the examiner plays a huge role in the reliability and accuracy of the machine, no matter how up to date it is. With that said, an up to date polygraph machine coupled with an experienced examiner will make for very accurate results. Although movies have painted a picture about lie detector tests being unreliable and can be cheated, in reality it can be quite hard to cheat on the lie detector test and if an individual tries to do so, the examiner can detect it right away.
Does being nervous count?
A lot of people feel nervous when going through a lie detector test, whether innocent or guilty. While this can be considered quite normal, a lot of people wonder if being nervous can affect the outcome of the test. Sure, the machine can read the spikes caused by nervousness, as well as the readings from lies. To the untrained eye, there is little to no difference between both readings but to an experienced examiner, they can definitely tell the difference between readings caused by nervousness and readings caused by lying.
Variety of applications
The application of the lie detector test is not only limited to law enforcement use, while it is commonly used that way. Lie detector tests can also be used by companies for their employees as part of a screening process or during times wherein there are anomalies in the company. These lie detector tests are also in fact, used by people who want to validate their marital relationship especially when they have a gut feeling that their partner isn’t entirely honest with them.
Today, the lie detector test can be considered as one of the most reliable devices in counteracting deception. With an accuracy rate of just over 95%, the lie detector test can help people tell the difference between truth and lies.