One major point to remember in all of this is this: there has never been any evidence that pre-employment screenings create a better workforce.  The only people these exams can be said to be helping are the polygraphers themselves, vampires on society.

Furthermore, they're not particularly concerned that there's no evidence that they're actually helping others.  All they care about is helping themselves, so who cares if it works?  

[url=-https://antipolygraph.org/cgi-bin/forums/YaBB.pl?num=1233987559]Here[/url] I describe some very simple (and cheap) ways they could demonstrate that they are doing some good.  They won't do it; they're evil.