Why we don’t recommend Voice Stress Analysis?

Voice Stress Analysis
LieTech neither practices nor endorses Computerized Voice-Stress Analysis, Layered Voice-Stress Analysis and / or Voice-Stress Analysis by any other name.

Polygraph testing should not be confused with Voice Stress Analysis. Due to the fact that independent studies have yielded that it is “almost as accurate as flipping a coin”, Lietech and its members prefer not to be associated with this type of practice in any form. Voice Stress Analysis is also not being accepted by the CCMA.

For more information in this regard, feel free to browse through the following:

  1. Current research and legislation regarding >
  2. Relevant research on voice stress validity >
  3. The Virginia Department of Occupational Professionalism and Regulation recently prepared a report on voice stress. This document was pivotal in the decision by the Virginia State Legislature to disallow the use of computer voice stress analyzers in criminal investigations. For more information visit >

Does it comply with CCMA legislation?

CCMA & Polygraph Testing
polygraph testing at CCMA

What is the status of polygraph testing at CCMA

Polygraph testing in disputes relating to employment relationships is growing in South Africa. There is no legislation at this point to control the use of the test nor to protect the employee’s right against the abuse of the test. The main concern is that constitutional, legal and ethical standards in the treatment of employees should be guarded, while at the same time not losing sight that employers also have the right to protect their property.

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Can you beat it?

Just by spending a little time surfing the net, one could find a host of hints on how to beat the polygraph, and every competent polygraph examiner is also aware of them.

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