The Legal Implications Of Lie Detector Tests: What You Need To Know

Lie detector tests – also known as polygraph tests – are frequently used by employers, law enforcement and legal professionals to measure a person’s trustworthiness. However, the use of this technology is not without its own set of legal implications. This article will discuss the potential legal issues associated with using lie detector tests and information on Lie Detector Test price.

Types Of Lie Detector Tests

The most commonly administered lie detector test is the Polygraph Test, which uses sensors to record changes in a subject’s vital signs such as heart rate and breathing, during questioning. Other types of lie detection include Voice Stress Analysis (VSA), Brain Fingerprinting and Thermal Imaging. Each has its own pros and cons that should be considered when determining which type to use for a particular situation.

Legal Considerations

The legality of administering a lie detector test varies from state to state and country to country. In some places, such as Europe, it is illegal for an employer or other private entity to require an employee or prospective employee take one. In other places, like the United States, they are allowed but only under certain circumstances and with specific protocols in place. Any organization considering using them must understand their local laws before doing so.

Admissibility In Court

In most cases, the results of a polygraph test will not be admissible in court because they are considered too unreliable to meet the burden of proof required in criminal proceedings. There are exceptions where results may be admitted if both parties agree beforehand, or if there is sufficient evidence to suggest that fraud or deception occurred during the testing process itself. It’s important to note that even when results can be used in court, they can still be challenged by defence lawyers on various grounds, such as lack of scientific validity or improper administration procedures during the testing process itself.

Accuracy and reliability

Although many believe that polygraph tests provide accurate readings of whether someone is lying or telling the truth, this is far from the case; numerous studies have found that these tests have very low accuracy rates when compared to other methods such as DNA analysis or fingerprinting technologies. Furthermore, people suffering from mental illness can produce false positives due to their heightened emotional states, making them appear deceptive when they are not. So it’s important to consider all possible sources when assessing whether someone has been truthful about something.

Pre-test interviews and post-test debriefings

Before taking a polygraph test, subjects must undergo a detailed pre-test interview conducted by an experienced examiner. During this interview, the examiner will seek out important information regarding past experiences, physical health, etc. in order to ensure accuracy at the time of the actual test session. A post-test debriefing is also usually held after the test is completed, where further questions can be asked about specific answers given during the test. These two steps help to reduce the chances of false results due to misunderstandings or misinterpretations during the assessment process itself.

Information on the cost of a polygraph examination

The cost of conducting a polygraph test can vary depending on what services you require and how long it takes; however, prices typically range between £200 – £500 per hour depending on the level of difficulty involved with the case at hand. Some companies offer discounts for multiple sessions, while others may even waive the fee altogether, depending on the circumstances of each request. Prospective clients should contact the individual providers directly for more detailed information on the pricing plans available in their area.


The use of polygraph tests can provide invaluable insights into whether someone is telling the truth; however, care must always be taken when considering these measures due to their potential legal implications both in terms of admissibility in court proceedings along with the accuracy levels associated with them respectively. Additionally, those looking to obtain information on lie detector test prices should contact the respective service providers directly for more detailed pricing details within the chosen region area before proceeding further with the request itself.

Kenneth Atkinson is a family man who had no choice but to learn about online business. He, like so many others who have suffered difficulties at work, was compelled to adapt — and quickly — in order to support himself and his family.