Polygraph – what is it?
A polygraph is a device which it’s purpose is to helps us know if the interrogatee is being truthful or not. One can use polygraph test to a specific inquiry or a general credibility check.
The invention of polygraph occurred at the 20’s of the 20th century, and it’s working on the principle of reading bodily reactions.
How the test is being carried out
The interrogatee is attached by electrodes that read in-voluntary physical reactions that indicate if the person is telling the truth.
It’s common believe that a person that is lieing, his in-voluntary body changes that happen in the body, can be read by the polygraph machine, changes like: ascented blood pressure, raced pulse and more.
When is the polygraph being used?
The commonest use of the polygraph is by policemen on criminal investigations. Nowadays, however, a lot of private companies and organizations ask potential workers to go through a polygraph test, specifically in the fields of money, security or military.
A polygraph test is generally held by authorized institutes; a security company or investigation companies.
Insurance and credit card companies use the polygraph when they sue or they’re being sued.
Do you need a court confirmation to conduct a polygraph test?
The court can order on a polygraph test in the process of an ongoing investigation or case.
In the case that a communal institute asks for the test as part of a background check, they don’t need a court order, the institute may do as it pleased.
Why do a polygraph test?
A polygraph test may assist reveal false information or prove reliability.
Some companies make periodic obligatory polygraph test for the entire staff as a way to warn them, and in order to intimidate them.
What is asked in a polygraph test?
Different kinds of questions, depends on what kind of information one wants to obtain.
Can anyone conduct the test?
A polygraph test must occur at an authorized location.
An investigator of the police does all police inquiry, but workers testing or interrogation related tests are done by an investigation office.