How accurate is a Lie Detector Test?

Although no forensic testing of any kind can be guaranteed to be 100% accurate, research gathered by The American Polygraph Association has suggested that qualified polygraph examiners can achieve an accuracy of 95% to 98% when an examination is conducted in an accurate manner, with issue-specific questions and using validated polygraph techniques.

Through our robust policies and the application of best practices, Lie Detector Investigations can fulfill and satisfy these conditions by operating to the key conditions, listed below.

1. Our examiners are fully qualified, experienced and accredited.
2. We only use up-to-date, computerised polygraph equipment and validated test techniques.
3. A pre-examination checklist is completed at the time of booking to ensure the examinee is a suitable candidate for testing.
4. An examination is conducted in an environment which is void of distraction and disturbance, and therefore we do not conduct tests at a person’s home.
5. We adhere to The American Polygraph Association’s continuing education policy, by undertaking updated polygraph training, every two years.

Important notes and references: 

Before choosing and committing to a Polygraph examiner or Polygraph company it is important to ensure you are choosing a qualified and accredited examiner. A quick and easy check to carry out is to refer to The American Polygraph Association and/or The British Polygraph Association.

Lie Detector Investigations only use the latest and validated techniques which are listed on The American Polygraph Associations website,  “Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques”, can be viewed and downloaded here.