The polygraph is an instrument that records internal physiological changes. It records respiratory activity, electro dermal activity and cardio (blood volume) activity. Physiological changes occur in a person’s body when they are not truthful. These changes are recorded by the polygraph instrument; then evaluated by the polygraph examiner to determine truth or deception.
Per American Polygraph Association (APA) guidelines, the length of a polygraph examination should be 90 minutes in duration; however each examination is unique and depends on many factors, including the complexity of the issue, what type of testing is being conducted, and the level of the examinee’s cooperation. A person scheduled for an exam should plan on at least two hours.
A person should get an adequate amount of sleep prior to the examination, use prescribed medication as directed and do not use alcohol or illegal drugs within 24 hours of the scheduled examination. If you have any questions, contact the examiner.
Yes. There are no surprises on a polygraph. Every question will be reviewed prior to the examination and the examinee is given the opportunity to ensure that he/she understands and is comfortable with all test questions.
Bring valid photo identification (a driver’s license or government-issued document), and any required paperwork discussed when the appointment and contract is made. The examiner will provide the results in accordance with the contractual agreement.
A competent polygraph examiner will be an active member of a recognized polygraph association (national and/or state) and will stay current with continuing education. Many states do not require licensing which means “anyone” can claim to be a competent examiner. Be wary of anyone without established credentials and continuing education associated with recognized national and state associations. Be sure to check credentials and training. If you are looking for an examiner to test on a sexual issue, make sure they are PCSOT certified by the APA. Mr. Carlson is certified to conduct PCSOT tests.