The latest generation of CRM is about threat and error management (avoid threats, manage errors, mitigate errors which happened). If the aircraft is in an undesired state, you have to switch from error management to undesired state management.
"An example would be as follows: a flight crew selects a wrong approach in the Flight Management Computer (FMC). The flight crew subsequently identifies the error during a crosscheck prior to the Final Approach Fix (FAF). However, instead of using a basic mode (e.g. heading) or manually flying the desired track, both flight crew become involved in attempting to reprogram the correct approach prior to reaching the FAF. As a result, the aircraft “stitches” through the localiser, descends late, and goes into an unstable approach. This would be an example of the flight crew getting "locked in" to error management, rather than switching to undesired aircraft state management. The use of the Threat and Error model assists in educating flight crews that, when the aircraft is in an undesired state, the basic task of the flight crew is undesired aircraft state management instead of error management. It also illustrates how easy it is to get locked in to the error management phase."(Robert L. Helmreich, University of Texas)
You have to differentiate between time critical decisions and non time critical decision. If the situation requires immediate action, a great part of decision making will be INTUITION (if not covered by SOP's e.g.). Intuition becomes more and more accepted as term, because most of our daily decision are made intuitively, unconsciously. Then, a major role, to rely on the intuitively made decisions, plays the "knowledge experience". Situations were your unconscious decision has shown good results and situations were this intuitive decision has gone wrong. (Prof. Gigerenzer of the MPI of Bildungsforschung in Germany is doing studies in this field, which is fairly new). But this intuition is probably the so called AIRMANSHIP, or the SATISFICING, to be near enough, e.g., if the sitiation is time critical, you would aim for the first suitable solution, wheras the situation is not time critical, you would aim for the best solution.