Sergeant 1107:  you make a good case, but sorry, no sale.  We do use charts from those who have admitted using CMs, but we also use those from cases where there is absolutely no doubt that they were employed.  Funny you should mention that we should use confirmed cases, since this site professes that CMs can't be detected.  Of course George M has always denied using CMs during his two polygraph exams, and he's not going to confess now, after more than  10 years;  it certainly would not help his credibility after all these years.  The majority of those who do, won't admit it, but that doesn't mean they didn't.  It just means it's not a confirmed case.  I suspect you are LE, so let me ask you, when you interrogate a suspect, and he denies involvement in the crime, do you simply take his word?  I wouldn't think so.  Same logic here.  However, we do take appropriate counter-countermeasures to confirm our suspicions, and when they are confirmed, it's a good bet CMs were employed (whether the subject confesses or not).  Again, having myself seen George M's charts, there's no doubt in my mind about his use of CMs.  Nor in the minds of everyone I have talked to who have also seen them.  CMs have been used long before Geoege M came along; I have no doubt some were successful, others were not.  However, polygraph technology has come a long way in the last decade, and we now have more tools to fight CMs than we did in years past.