The use of voice stress analysis (VSA) is considered to be an extremely high-risk practice. The validity of information gathered during such processes remains questionable and is of little investigative/evidentiary use. The outcomes of such processes cannot be professionally defended.
True Lies distances itself from the aforementioned practices and does not advocate the use of such services, based on the fact that modern independent research has proven the accuracy of VSA to be no better than chance.
Research material in support of this submission is available on the American Polygraph Association website, at the following links:
The link below can be followed to view the Expose on Charles Humble and his phony PHD on ABC News Primetime, for further insight.