http://www.polygraphplace.com/spotlight/danmangan.htm
I guess "False Positives" are not as "rare" as polygraphers posting on this board have claimed. At least there must be enough to warrant the above advertisement targeted toward industry operators.
Of course, they attribute the ever dreaded false positive to choosing poor operators who use improper technique, rather than the polygraph itself. A common trend.
The ad even favorably mentions the NAS report, which polygraphers have frequently criticized.
TC