Polygraph tests can be carried out by your local police force, but the FBI and CIA generally perform polygraph tests. However, these are often only used in major cases and are not allowed to be used by members of the public without any valid reason.
FBI agent takes many years of training and licensure. You will first need to become a Peace Officer, licensure is different by state. You may need to go to a police academy, or at least get a bachelors degree in criminal justice. Then you can apply for the FBI, but you will need to pass many oral exams, written exams, polygraph tests, and physical fitness tests.
No, the results of polygraph tests are inadmissible in court as evidence.Added: They can, however, be used by law enforcement as an aid to investigation.
No, polygraph tests are not admissible in court. Court precedents have decided that the polygraph test is unreliable, and that the test could dishonestly persuade the jury's verdict. The polygraph test is only used for investigative, law enforcement needs.
The first polygraph was invented in 1917 and was used for counterintelligence work during World War I. In 1938, the FBI began using polygraph examinations. The first polygraph to be used in a courtroom as evidence was on Dr. Francis Sweeney; a chief suspect in the Cleveland torso murders. He failed the polygraph test but was released later due to lack of evidence.
1926
21 in the US. You need to pass numerous backround tests, do a polygraph. and quilify physicaly.
Physical, oral, written, psychological, drug, background, credit & a polygraph. Then Academy if you get beyond that successfully.
Polygraph examiner
The polygraph test is not "proof-positive". The polygraph test is not completely unreliable.
There are many applicants for few spots. In addition to the education requirements, there is also the physical fitness requirements, and that's only if you pass the polygraph and background investigation. It's easier to get into the FBI in another position (e.g., an analyst) and then apply to be a Special Agent.
Herbert Hoover