Modern day lie detector tests don’t just consist of machine based techniques. Interrogation and questioning methods are vital to ensure as accurate a result as possible, and the beginnings of this can be traced back to the late 1940’s. An American lawyer named John Reid devised what he called CQT (Control Question Technique) that was designed to be emotionally stimulating for non-deceptive people and less so for those not telling the truth. Reid’s introduction and use of this technique was hailed as a major breakthrough in lie detection methodology.
By the time the 1980’s had come around experts in the field of lie detection had started to consider the use of a computerised polygraph with the University of Utah being the leading establishment in this area. John Kircher and David Raskin created a system known as CAPS (Computer Assisted Polygraph System), which was an algorithm created for the purpose of evaluating the data collected from Polygraph machines. Some ten years later the first fully computerise polygraph was built and made its way into the market.
In more recent times there have been several studies into polygraphs and their accuracy. The U.S Department of Energy’s 2003 study conducted in accordance with The National Academy of Sciences sought to analyse all previous data collected from polygraph research (they chose not to carry out any further tests due to the fact that recreating the scenario in which a lie detector would be used is all but impossible). The review concluded that whilst there may be other techniques for lie detection, none of them are able to outperform the polygraph nor is there any evidence to show that they are capable of doing so either in the present or in the future.
We can therefore say that with over a hundred years of science and research having gone into polygraphs (and their associated lie detection methods) they remain the number one choice for lie detector tests.
Find out more at: liedetectortest.ie