This question may be obvious to you guys but I have read The Lie Behind the Lie Detector and understand the importance of distinguishing between control, relevant, and irrelevant questions, yet during a control question, it is known that the polygrapher is trying to decieve the examinee here through the question asked, however, it is not really stated how we are to answer these questions, noted that I would be using countermeasures.  Are we at admission at all during the control questions?  Ex..Have you cheated in school?  Obvious control question...would the correct method of countermeasuring be saying yes while administering these procedures?  Also, what if the truthful answer to that question was no.  What would the use of countermeasures be to the polygrapher (through reading of the charts) when our answer was no.  Maybe I am just a little confused.  Thanks for the help.