I've read somewhere about a psychological theory that people often remember the end results or the outcome of a certain situation/discussion/conversation/etc, but not the details of it.
In other words, the theory postulates that people often forget about things like who invented the solution, or how this happened, or who should be doing this task. Rather, people tend to just remember what the solution was, what happened, and what task had to be done.
I don't remember exactly in what context I read about this theory. It could have been part of some other theory.
Does such a theory exist? If so, what is the name of that theory?