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"After careful analysis of all the diagrams obtained from the [polygraph] test, we have determined that the answers to these questions were not false. Thus, in our professional opinion, Andrey Lugovoy was telling the truth when answering the above questions,” members of the British Polygraph Association Bruce and Tristam Burgess said.
Originally posted by PhoenixOD
Since when are polygraph's considered a reliable method of telling if someone is lying or not?
In the UK, polygraph testing is increasingly used outside of the courts system, for example between warring couples and by employers. In addition to this, legislation passed last year allows the use of polygraph tests as part of probation conditions for certain criminals, though it specifically forbids its use in criminal courts. Polygraph testing is currently being used to determine whether sex offenders are ready to be released from prison and will continue to be used as a pilot in certain areas of England and Wales for two more years. Whether this will alter the opinion on court use remains to be seen. Lie detector results can be admissible in some tribunal and civil cases, but their introduction into criminal courts would require legislation.
Currently polygraph testing is not admissible because of concerns over its accuracy. It is thought that a polygraph test is between 60% and 95% accurate, but this is not known for certain and there have been concerns that if used, the polygraph could lead juries to make decisions based on its result, leading to convictions of innocent people and non-convictions of those able to beat the polygraph.