A lie detector is a machine that enables a private investigator to make a classification of a person telling the truth and one that is telling a lie. This is established through questions and answers. Recordings are made into a chart depending on a client’s physiological response that is picked up through their breathing, sweating and heart beat.


How To Trick A Lie Detector

Many people have tried ways on how to trick a lie detector, but the truth is, when working with a professional this might be a daunting task. A private investigator with experience and skills knows exactly how to ask the right questions and in a systematic way.

According to numerous researches carried out by scientists, polygraph machines give a high percentage of accuracy of up to 98 percent. This accuracy however depends on a person’s ability to conduct the test and the kind of polygraph machine used. There is an error margin that is considered in a polygraph test. This is a result of either the client being constantly accused of a crime they did not commit which gets into their head or a client being subjected to a very intense session of questioning that may create tension in a client. As a result, there are erroneous results recorded.


Prevent Erroneous Mistakes

To prevent erroneous mistakes during a lie detector test, a conductor of the lie detector test must be conversant with the mechanics which is the behavior of one’s body reactions when subjected to certain questions and so on. This enables the conductors differentiate when a person is either tensed or nervous because of the polygraph test or they are guilty as a result of their accusations and so on. A private investigator must also understand the technical aspects of a polygraph machine. This means that they are able to start and operate the polygraph machine and tell if polygraph machine is in the right state to be used in carrying out the test.


Mechanical Problems

Just like any other tools or machines, a polygraph machine may be faulty as a result of developing mechanical problems. A private detector firm should be able to ensure that the machines are serviced to ensure that they operate optimally. A faulty machine will definitely give out wrong results that led to a completely wrong conclusion. This is because apart from the capability of a polygraph, the conclusion relies on a good polygraph machine. It has to be reliable with no faults to prevent wrong results.

According to the factors mentioned in the article, the validity of the results produced during a lie detector test is dependent on two main factors, the person carrying out the polygraph test and the type of polygraph machine being used. There are measures that are continually being put in place in order to reduce the margin error seen during tests carried out in the past including scientific research. This has improved ways in which various techniques are applied in carrying out the lie detector test and their results.