Reliable Polygraph Testing in Montana

A polygraph examination (credibility assessment, sometimes called a lie detector) is a scientific test that collects physiological data from a person to identify reactions associated with dishonesty.

The polygraph is a medical instrument that records the physiological changes of the examinee. It monitors respiratory activity, electrodermal activity, and cardio activity. When an individual lies, the body goes into a fight or flight syndrome, causing physiological changes. The polygraph instrument records these changes; it is essential to note that a polygraph does not include the analysis of physiology associated with the voice. Instruments that claim to record voice or psychological stress are not polygraphs and have not been shown to have scientific support.

Many studies have been done over the years that have documented the polygraph's accuracy to determine truth vs.deception. Generally, the studies found the polygraph's accuracy to be in the high 90% range.The U.S. Government studies have concluded that when a qualified examiner conducts the test correctly, the exam is between 87% and 95% accurate, depending on the test format utilized by the skilled examiner.

Since 1980, a compendium of research studies – encompassing 80 research projects involving 6,380 polygraph examinations and 12 studies of the validity of field examinations following 2,174 field examinations, indicate an average accuracy rate of 98%.

Contrary to popular belief, polygraph results are admissible in most courts across the country. The states of New Mexico and Ohio have allowed Polygraph to be admitted, even over the opposing party's objection.

The Supreme Court has left it up to individual jurisdictions to allow or disallow the use of polygraph examinations. There are only four (4) states that have a total ban on admitting polygraph results. Most states allow them if both the plaintiff and the defendant have agreed (stipulated) that the test results will be admissible before the examination is conducted. They are admitted more frequently in civil trials than criminal trials. For more details on admissibility and case citations for each state, visit www.polygraph.org Source: American Polygraph Association.

Yes. There are no surprises on a polygraph examination. During the pre-test phase, the examiner will review all examination elements and review the test questions with you before administering the examination.

Yes, you will be advised of the results as soon as the examination is completed, and will receive a written report within ten business days.