Lie Detection – A Series of articles on credibility

How credible are lie detector tests?

Being in the industry for over 25 years and a professional examiner since 2006, I consider my opinion on the credibility of both Polygraph and Voice Stress Analysis, valid.

In this series of short articles, you will hear first-hand, from the horse’s mouth so to speak, the truth.

Read on to learn what such a test is, how they are done, the answer to the most asked question “Can you cheat?”, and the answer to the second most asked question, “Do they work?”

What is a Lie Detecting Test?

In short, lie detector tests record several different bodily responses which can then be used to determine whether someone is telling the truth.

They measure things like voice frequency, blood pressure, heart rate, changes in a person’s breathing, and in the electrical resistance of the skin. All lie detection techniques, measure an indirect effect of lying, that of an increase in physiological stress when responding to questions.

So, Lie Detecting tests do not measure deception or lying directly, but rather possible signs that a person could be deceiving the examiner.

This information is then used in conjunction with everything else that is known about the person to form a clearer picture of whether they are being truthful.

Leave a Reply

Top