What Equipment Do You Use?
To give you the best possible results, we use what we believe to be some of the best equipment available today. It is the LX5000 computer polygraph system to record, store, and analyze all of the physiological changes that are monitored during a polygraph examination. The LX5000 is made by the Lafayette Instrument Company, the global leader in the manufacture and sale of lie detectors with a worldwide market share of 85%. The company’s lie detectors are used by lie detector experts from more than 80 countries that use modern lie detection techniques.
LX5000 Lie Detector
The LX5000 can monitor up to a total of nine channels at a time, and the integrated software makes the computerized system intuitive and easy to use for the examiner, delivering the results that our clients need. The tracings recorded are in real-time and are truly rectilinear so that charts can be easily interpreted. But even with the most advanced system in the world, the real accuracy comes from the interpretation of the system’s results by a trained, experienced examiner.
Our polygraph equipment is portable so that we can use it either in our offices or at another location, but if we do an off-site examination, it is important that the room is quiet and free from all distractions.
The practical purpose of polygraph examination results is to inform the examiner and the referring professional whether the examinee has been truthful about an issue of concern. Having accurate and well-documented results allows the examiner to make better informed and more effective decisions about subsequent action, including additional interviewing, investigation, testing, or other risk management decisions.
The scientific purpose of polygraph examination results, like the results of other scientific tests, is to establish a basis of test data as a form of evidence to guide and support a professional opinion or conclusion. Test results can be thought of as an interpretation of the test data, using structured quantitative and procedural rules, into simple human categorical and conceptual language that is useful to the referring professional.
Underlying all scoring and interpretation tasks is the fundamental obligation of all forms of scientific testing: to quantify the degree of uncertainty associated with the test result by describing the data with respect to the basis of published evidence, including basic knowledge that describes the generally expected performance of the analytic model, and normative data that describes test performance with the reference samples and intended population. The ESS Report Generator provided with the LX5000 is a powerful yet simple tool designed to assist with this purpose and obligation.
The software assists the examiner with the need to score each examination, determine the test result, provide a written report to the referring professional or agency, and maintain a record of the test data and analysis. As always, no automated procedure can substitute for the need for a competent interview and test data acquisition phase, and the report generator within the software suite relies on the expert examiner to ensure that test scores are obtained using valid criteria and that they are interpreted effectively.
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