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How Much Does It Cost for A Lie Detector Test?

Instead of being concerned with how much a lie detector test costs, it's a much better approach to consider what the value of a good lie detector test is to you.

Lie detectors exist in many forms. In some cases, they are little more than children's toys that are supposedly based on the principles of professional polygraphs. In other cases, polygraphs are vital tools used by the very best professional investigators to help them solve some of the toughest cases of their careers. What are you willing to pay for a service that can offer you clarity in a difficult situation with limited room for doubt?


Prices Of Lie Detector Tests

In the UK, professional investigators can price their services in a number of ways. You can expect to pay anywhere between £400 and £900 for the service depending on the specifics of your case. There are also situations where the fees could be lower or higher.

Higher fees are usually the result of additional expenses such as:

  • Testing a large number of people
  • Tests carried out over an extended period of time
  • The need for the private investigator to travel
  • Paying for an office to conduct the test

On the other hand, unless you're talking about the simplest of cases where an investigator doesn't have to make much use of their expertise, you should be careful when choosing an investigator with very low prices. This is unusual since a professional service needs to be charged a fee that reflects the quality of service offered.

There's also the fact that professional investigators have usually invested a fortune on their equipment and perfecting their skills.


What Is Included In The Lie Detector Test Service?

In a lie detector test, a private investigator will have to carry out a number of activities including:

  • Ensuring the setting is well suited for the testing
  • Conducting an interview to get some basic information from the subject
  • Carrying out a preliminary test where the subject will be asked control questions to determine baseline responses
  • Conducting the test during which the subject is asked the relevant questions
  • Conducting a post-test interview
  • Create a report based on the responses from the test
  • Giving the client the results of the test and explaining why they arrived at certain conclusions

There will be breaks in between the different activities. These breaks give the investigator and the subject of the investigation opportunities to prepare for the next phase. The subject might need this chance to dispel any feelings of nervousness and get used to what's happening.



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