At GLOBAL INTELLIGENCE, we remain unwilling to debunk any technology in preference to another, without being in possession of conclusive evidence, that is not financially motivated. We make use of both technologies and any recommendation made is driven purely by our clientèles needs.
Although asked if Voice Stress Analysis, being the newer technology is in fact better than the more established Polygraph test, we remain of the opinion that the quality of service in both is dependent and driven by the experience of the examiner.
Many people think that Voice Stress Analysis and the Polygraph test are one and the same technology. This is not the case and there are fundamental differences between the two very different technologies.
Polygraph testing has been around for a lot longer than Voice Stress Analysis. The first commercial polygraph was patented in 1921.
The Polygraph test monitors and records four/ six key deception indicators to determine and identify the physiological changes consistent with deception.
Voice Stress Analysis records “micro-tremors” produced in the voice box to detect deception.