You're quite right - the Canadians call it Decision Making, and this is indeed what I concentrate on out of all the subjects available, but if I called it that nobody would think it was relevant!
It's unfortunate that the concept was ruined by picking up a lot of psycho baggage along the way, although it is true that some part of the aim is to help people get along a little better and take the ego out of the cockpit. The single pilot still has to talk to engineers and customers
Phil