During the past three decades numerous empirical studies of economic behavior have been carried out and their theoretical foundation has been clarified. There was a rapid development and articulation of data, theory, and methodology. A new discipline of behavioral economics was emerging [which] consists of the empirical investigations of the behavior of businessmen and consumers in one country in one time. Generalizations about economic behavior emerge gradually by comparing behavior observed under different circumstances.

George Katona, and James N. Morgan (1980). Essays on behavioral economics. Univ of Michigan Survey Research. p. 3