Knightshaiid,

May I correct  you.  The NAS report was not a study it was a report based on selected studies.  I have read and do read TLBTLD and have studied it.  It is an excellent work by Mr. Maschke and I applaud him for his hard work.  Physical CM's are easily detected and we are working on the Mental CM's, so far it is difficult to detect them and almost impossible to prove they were used.

Polygraph has advanced since the NAS report.  Our current "accuracy" is 86% in screening applications and much higher on specific examinations.  When we do a breakdown on a screening exam our "accuracy" increases.

Polygraph has been admitted as evidence in courts on many occasions over the last two years.  The courts have accepted it as a "science" in many jurisdictions.  I have personally testified in several cases. 

There are persons that employ CM's and are undetected, I cannot give you an accurate % on how many, they don't tell me after an examination.  Do they work?  If you are skilled they do work some of the time.  If they are detected you are DQ'd and not allowed another opportunity in my jurisdiction. 

Mr. Maschke does ask you to make an informed decision before deciding to use CM's.  He does not condone being dishonest, he does try to help individuals pass polygraph examinations when being honest.