Lie Detector New Zealand use the very latest state of the art computerized equipment - the Lafayette
LX5000 Data Acquisition System and associated computer software. This equipment is top of the line and produced by
This computerized equipment is linked to the instruments that are attached to the subject’s body. There are three parameters that are recorded – breathing, heart rate and sweat gland activity.
Two pneumographs are used to record breathing, one for the thoracic breathing and one for the abdominal breathing; a cardio cuff to record changes in blood pressure and pulse rate; two finger cuffs to record sweat activity.
In addition Lie Detector New
The figures relating to the accuracy of the Polygraph
vary by a few % depending on the source of the study. Lie Detector
Whilst reference is to accuracy, this term “accuracy” is misleading. The 96% actually means that in 96 out 100 tests the results were conclusive, that is either “Deceptive” or “Truthful”. It is an erroneous perception that the remaining 4% are errors. They are not errors or inaccuracies, they are simply inconclusive.
This 4% simply relate to 4 out of 100 where the Polygraph was unable to make a conclusive determination as to Truth or Deception hence the inconclusive result.