I recently stumbled upon Kurt Lewin's field theory. However, not being very familiar with gestalt psychology, I could not assess whether Lewin's theoretical framework is still used today and if yes, what its applications are.
In other words: Is it still a recognised psychological theory? If yes, what are its application in psychological research and applied psychology? If no: Is it because Lewin's ideas have been proven wrong, because they've been forgotten or because they were never actually accepted within psychology?