Re: Pain - How Important?
I read a fascinating article on the psychology of pain compliance on the 'net somewhere a few years ago. The author concluded that individuals react in one of four ways to pain. Only one of them was "Yes, that hurts and I will do what you want me to do to stop the pain." I don't clearly remember the other three, but the conclusion was that pain compliance is often not effective.
I highly recommend Kevin Secours' DVD "Primal Power 2: Simplifying Restraint and Control Tactics". Kevin lays out the whole use of force continum used by most leo agencies and how to train it for self defense. The set also includes a DVD on how to adapt groundfighting in realistic situations.