Experimental finance is the study of financial and economic concepts using experimental and quasi-experimental research. Although traditionally, finance and economic research focuses on observational and theoretical work, experimental finance aims to test the validity of financial and economic theory. The majority of experimental finance research frequently employs laboratory experiments, often using behavioural finance principles. Although experimental finance works well for testing behavioural/microeconomic concepts, experimental and quasi-experimental research is impossible on larger scales. On a nationwide scale, observations are the only opportunity for study via experimental finance. When governments or regulatory bodies implement economic or financial policy, researchers can observe the effects on the economic environment. Publications and recommendations made by regulatory bodies are often considered when determining economic policies.