Who needs a polygraph test and why?

Any experience is literally reflected in the unconscious reactions of a person who can not be controlled. That is why lie detector tests have recently become so popular. Polygraph examiners ask questions according to a specific algorithm, and check the answers with the body's reaction.

When and for what reason is a polygraph test required?

Polygraph tests are voluntary instrumental tests that help obtain accurate data about a particular event. They are common in cases such as:

• Screening a prospective employee. By learning the key points of the service biography and/or reasons for dismissal, as well as other features of past work experience, it is possible to select the most reliable candidate;
• Workplace investigations, particularly if an event has occurred that has resulted in financial loss;
• Psycho-physiological examinations in administrative and civil cases.

Regardless of the reason for the examination, it is important that it is carried out only by a qualified specialist. It also depends on him a lot, in particular the correctness of questions, intonation and much more.

Can a polygraph give wrong results?

A lie detector is a complex device, which reacts to the processes taking place inside the body; a person cannot control them and they do not manifest themselves externally. Based on the data obtained from the sensors, the computer gives a definite conclusion and makes a conclusion about the indicators of truthfulness or falsity. And it does not matter whether the examinee is nervous or not, the polygraph will respond to internal processes.

The key point is that the test is conducted by an experienced polygraph examiner. He is also a psychologist. Together with the device the specialist follows the reactions, makes his own conclusions. All this helps to determine with high accuracy the honesty of the examinee.

How does a polygraph test take place?

The way the test is shown in feature films is actually only a small part of what happens. When a polygraph test is ordered, the following steps are taken:

• Examination of the situation. This includes collecting the data necessary for such a test, interviewing the parties, examining documents, if necessary, a visit to the scene of the incident;
• drawing up tests. The questions are special, grouped into blocks, and their final formulation occurs at the stage of conversation with the person being tested;
• testing. For one person will take 2-3 hours in standard cases, but sometimes to recheck or clarify the results obtained it is necessary to conduct additional testing on another day;
• Analysis of results.

Before testing, an interview is conducted, during which the nuances of the device operation are explained and a couple of test questions are asked. The time required for the test depends on the amount of data obtained, but often requires several hours.