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Topic Summary - Displaying 4 post(s).
Posted by: Dean_O.
Posted on: Jul 31st, 2005 at 7:16am
  Mark & QuoteQuote
I'd be shocked if any polygrapher was able to detect a candidate employing "mental arithmatic" while answering a control question.

Posted by: Bill Crider
Posted on: Jul 18th, 2005 at 7:31pm
  Mark & QuoteQuote
my guess is if they see an outlandish change in patterns they suspect CMs or if they personally witness the subject doing something odd in the chair.
Posted by: Sergeant1107
Posted on: Jul 18th, 2005 at 1:45am
  Mark & QuoteQuote
Matty wrote on Jul 18th, 2005 at 12:13am:
how can they know what one is thinking?

That is an excellent question.   
 
Since knowing what the subject is thinking would seem to be a vital factor in determining if he or she was using countermeasures, it would appear to be impossible to positively determine.  They likely make "educated" guesses and later call them "science."
Posted by: Matty
Posted on: Jul 18th, 2005 at 12:13am
  Mark & QuoteQuote
Without a confession, how can an examiner know with certainty that CM's are being used, unless of course they have sensor pads that indicate it but minus that, how can they know what one is thinking?
 
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