Just a little comment about cooperative training. Even with resistance, no type of training can teach you how to deal with real anger in a real attack; this is the part that collapses most people regardless of their level of expertise and years of training in the dojo - only when you experience real hostilities will you know whether you are a fight or flee type of person - those of the fight type will subconsciously respond with those skills that have been conditioned in them by their training, and those of the flee type will be useless regardless of how much training they have had.