D - Microeconomics

JEL top-level code D: the behavior of individual households, firms and markets, including consumer and producer choice, market efficiency, welfare comparisons, information economics and much of behavioral economics. Belongs here: concepts describing how individual economic actors decide and how individual markets allocate resources and surplus. Does not belong here: economy-wide aggregates and monetary phenomena, grouped under Macroeconomics and Monetary Economics, or the economics of firm organization and strategy specifically, grouped under Industrial Organization once this atlas holds concepts needing that distinction.