Polygraphs

Not if it's genuine. The polygraph is based on physiological reactions in the subjects body. If you genuinely have no recollection of events surrounding a particular incident, the polygraph wouldn't detect any changes - However, if you try to fake memory loss in order to avoid answering a question, the machine will detect minor changes and flag the answer as false.

It depends on who has asked you to take it and why.

• No, you cannot get a lie detector test done on someone you think is cheating as it is considered an invasion of privacy. If you have good clues that this person is cheating then you can see a pattern as to what evenings they go out and either follow them with a friend in a car they do not recognize or pay a private detective for a weekend to get the proof you need.

NONE

Dayy

Depending on the job, the government may drug test their potential hires. The government is very strict and you may also have to pass a lie detector test as well.

Yes... in fact, in my opinion I don't think they work

** NEW ANSWER **

Like any other piece of equipment, a polygraph instrument can have malfunctions and these malfunctions will prevent the exam from being conducted. If you are asking whether a malfunctioning polygraph can give incorrect test results, the answer is no. The examiner will either be unable to administer the exam at all, or some data will not be able to be collected adequately. - Michael Martin (President, Global Polygraph Network)

Generally when you lie, your system will chance, you're breathing or heart rate may increase and you may start sweating etc. It basically just tests for an strange activity in your body.

However, some experts believe that it's not 100% proof that someone is lying.

Your 'disorder' would have to be disclosed before the test was administered and you would probably have to present a valid medical diagnosis of your condition from a doctor. If the test is the pre-requisite to some particular employment for which a polygraph test was required, you MIGHT have to consider foregoing this particular type of employment, or employer.

A police dept that doesn't care about quality when hiring persons. == The Employee Polygraph Protection Act (EPPA) of 1988 does not refer to federal, state and local governmental agencies such as police and fire departments . As a result all these agencies are permitted to use polygraph examinations for employment purposes.

A lie detector.

On March 31, 1998 the US Supreme Court issued a ruling (United States v. Scheffer, 523 US 303 (1998)) that overturned a case involving polygraph evidence. However, their decision did not completely disallow the use of polygraphs as admissible evidence in criminal trials. The justices ruled (in a split decision) that state and federal governments MAY ban the use of polygraph evidence in court, declaring that doubts and uncertainties remain about the accuracy of the so-called lie-detector tests. It should be noted that the operative word in the decision is MAY and not SHALL.

See related link below:

Apple's app reacts on the basis of voice stress analysis. A traditional lie detector reacts to changes in temperature and moisture of the skin that occur when you are knowingly lying. Their weak point is that if someone is an 'easy' lier by nature, has started believing his own lies or mistakenly thinks that what he tells is the truth, the lie detector will not react. Also, if you have the time it is possible to 'train' for questions where you may want to lie, so the lie detector doesn't notice a skin or voice stress change. On the other hand very nervous people may cause 'false positives' even when they are not lying. It's why almost everywhere, lie detector results are no longer accepted as 'proof' by Courts. Apple sell its app just as fun and games, and rightly so.

They are widely used in criminal investigation- but are generally inadmissible in court. the Vatican came out and condemned the device way back in l958 in the reign of Pope Pius XII. Pope blasted the idea as an intrusion of privacy.

only if you stole the elephant from the museum may-be

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.

The question must be framed in a more specific manner. There are several uses of the ploygraph in WA which are legal and proper, and several which do not meet that standard.

I don't think they polygraph, there is not that much confidential info at the SEC or the FTC. Most government agencies and even private companies will do a background check. Some places will drug test. Good luck.

Another Point of View: I disagree with the above answer. Depending upon the position you are attempting to fill, and it's responsibilities, there is every likliehood that you will be polygraphed.

Because people can train themselves to lie, so that their metabolism (the part the machine measures, such as heart rate and skin temperature) does not change when they lie. Also, the machine might not be calibrated accurately.

No. You can become an AFOSI Special Agent without being given a polygraph. The polygraph for hiring purposes is reserved for positions that can be applied for for once you become an agent. The polygraph is not required to obtain a TS/SCI. I'm sure the government would like to mandate this, but because of limited resources/manning there would be a huge back log.

it depnends on if it is a big city or small.and if the police station is moderately financed, and 3rd if they have alot of crimes in the city

Lie detector results are not admissible in the courts in the United States. On rare occasions, a defense attorney and/or a district attorney may conduct a lie detector test if there are doubts about a case.

Yes.

Yes, the U.S. Border Patrol uses polygraph testing as part of the hiring process. Polygraph testing is required of all applicants going through the expedited hiring process and other applicants may be subjected to one, as well.

Some people are able to control their body's reactions, mental and emotional reactions, and other things that the polygraph looks for, in order to deceive the machine.