What is the difference between traditional economics and modern economics?

Traditional economic research is mainly based on the assumption that people are driven by their own interests and can make rational decisions. For a long time, economics has been generally regarded as an empirical science that depends on actual observation, or a speculative philosophy based on deduction and reasoning methods, rather than an experimental science that is tested in a controllable laboratory. However, the current economic research pays more and more attention to the revision and testing of the premise hypothesis of basic economic theory, and relies more and more on the data obtained in the laboratory rather than from the field. This kind of research originates from two completely different fields that are merging with each other at present: one is the field of analyzing and studying human judgment and decision-making behavior with cognitive psychology; The other is to test or examine the unknown or uncertain fields predicted according to economic theory through laboratory experiments.