Several studies have demonstrated that positive emotion facilitates creative problem solving. One of these studies showed that positive emotion enabled subjects to name more uses for common objects. Another showed that positive emotion enhanced creative problem solving by enabling subjects to see relations among objects (and other people – SV) that would otherwise go unnoticed. A number of studies have demonstrated the beneficial effects of positive emotion on thinking, memory, and action in pre-school and older children.”
If empathy increases with positive emotion (a result of good luck, for instance) – then it has little to do with its objects and a lot to do with the person in whom it is provoked.