This type of test is based on the premise that muscles in the voice box tighten or loosen, which changes the sound of the voice. The small, involuntary frequency modulations in the voice when under stress (i.e., lying) are measured. Studies show that this type of tests operates at about a chance level or slightly
Aptitude tests determine if a person is apt to do the job. In other words, can the candidate perform a job function? Predicting if someone will do the job is a challenge. Predicting if someone will lie, cheat or steal is also a challenge. The premise behind EyeDetect is that is indicates recent, past behavior.
Studies say that humans have an accuracy rate of 54% for catching liars. (Source: Bond & DePaulo, 2006) If that’s true, you’ll get the same results from chance, or in other words, from the flip of a coin. Behaviors such as gaze aversion, touching the body or face, or covering the eyes or mouth while
Research shows that an electroencephalogram and the fMRI may achieve results of 87% accuracy. However, both test are invasive (the examinee is connected extensively to medical instruments or is inserted into a large tube). Both methods are very costly, require expensive equipment and extensive examiner training. For these reasons, neither is a viable lie detection
Converus has not conducted this type of research. However, there were two experiments with polygraph that indicated that psychopaths are no better at defeating the polygraph than non-psychopaths. It seems logical that this outcome would be the same with EyeDetect due to the types of physiological changes measured. (Source: Raskin, D. C , & Hare,
We do not expect that preconceived or practiced lies would have an effect on EyeDetect’s ability to detect changes in cognitive load. By contrast, it seems logical that brain imaging technologies could pick up noticeable differences between practiced and spontaneous lies. Examples of brain imaging solutions include fMRI, MEG, and EEG.
There are many methods to be deceptive. At the heart of these methods is the intention to be deceptive. Some lie to be protective – lie to guard the liar from a perceived danger. Some, to be heroic– lie to protect others from danger. Others lie in a playful manner – lie to enhance a
In reality, the more you are prone to lying, the more you have to fabricate details and events to create a cover story. Lies breed more lies. Research indicates the accompanying stress can be harmful and even exhausting. The longer a person attempts to “keep a story straight,” the more stress and strain is felt.
A University of Massachusetts study revealed that 60 percent of people self-report they could not carry on a 10-minute conversation without lying at least once. British research found that men lie twice as much as women. (Source: http://www.today.com/health/how-one-lie-can-ruin-your-whole-day-1D80224805#
Although the EPPA law specifically mentions polygraph, the law has been applied in practice more broadly to the use of any lie detection solution. At the heart of the law is the concept of protecting a person’s right to privacy in employment. Thus, any lie detector would be prohibited. However, lie detection solutions can be