FAQs

A polygraph is a scientific instrument that records physiological responses, such as blood pressure, pulse, respiration, and skin conductivity, during questioning. The term “polygraph,” derived from Greek meaning “many writings,” refers to the multiple tracings it produces. Modern polygraph incorporate advanced technologies and specialized software to improving reliability and functionality.

Most individuals can undergo a polygraph test. Conditions that would render a person unsuitable:
• Anyone who is not able to consent to participate in the examination.
• Clinically diagnosed with active psychosis
• Dementia
• Health conditions that preclude the placement of the polygraph sensors

In the past, some individuals found the pressure from blood pressure cuffs on older polygraph equipment uncomfortable. However, modern computerized polygraphs use much lower pressure, making discomfort complaints very rare today.

Nervousness is a common reaction for anyone undergoing a polygraph examination, as anxiety can elevate heart rate, blood pressure, and other physiological functions. This heightened state becomes the examinee’s normal pattern and will be accounted for during the test.

Polygraph refers to the multiple tracings produced by the instrument with the same set of questions asked several times. Similar to statistical analysis, sets of multiple tracings enhance the accuracy of the results. As with all assessment methods, accuracy can be affected by the training and competency of the testing examiner. Any use of unvalidated polygraph techniques will render the test results unreliable.

Most polygraph examinations take between 90 and 120 minutes, the majority of which entails a standardized interview before the testing phase. Examinations may take longer when covering complex issues.

We typically arrange a suitable neutral testing environment at your location to ensure that tests are conducted properly. In line with the recommendations of the American Polygraph Association, we do not conduct domestic (home) testing, as it is often challenging to maintain an adequately controlled environment.

Everyone’s polygraph interview is different. Don’t let what you read or heard colour your experience. It is vital to your success that you follow your examiner’s instructions and maintain your focus during the process.