Economic efficiency

In economics, the term economic efficiency refers to the use of resources so as to maximize the production of goods and services. An economic system is said to be more efficient than another (in relative terms) if it can provide more goods and services for society without using more resources. In absolute terms, a situation can be called economically efficient if: No one can be made better off without making someone else worse off (commonly referred to as Pareto efficiency). No additional output can be obtained without increasing the amount of inputs. Production proceeds at the lowest possible per-unit cost. These definitions of efficiency are not exactly equivalent, but they are all encompassed by the idea that a system is efficient if nothing more can be achieved given the resources available. There are two main strains in economic thought on economic efficiency, which respectively emphasize the distortions created by governments (and reduced by decreasing government involvement) and the distortions created by markets (and reduced by increasing government involvement). These are at times competing, at times complementary Ц either debating the overall level of government involvement, or the effects of specific government involvement. Broadly speaking, this dialog is referred to as Economic liberalism or neoliberalism, though these terms are also used more narrowly to refer to particular views, especially advocating laissez faire. Further, there are differences in views on microeconomic versus macroeconomic efficiency, some advocating a greater role for government in one sphere or the other. [edit]Allocative and Productive Efficiency A market can be said to have Allocative efficiency if the price of a product that the market is supplying is equal to the value consumers place on it, represented by marginal cost. When drawing diagrams for firms, allocative efficiency is satisfied if the equilibrium is at the point where marginal cost is equal to average revenue. This is the case for the long run equilibrium of perfect competition. Productive efficiency is when units of goods are being supplied at the lowest possible average total cost. When drawing diagrams for firms, this condition is satisfied if the equilibrium is at the minimum point of the ATC curve. This is again the case for the long run equilibrium of perfect competition. [edit]Mainstream views The mainstream vie is that market economies are generally believed to be more efficient than other known alternatives and that government involvement is necessary at the macroeconomic level (via fiscal policy and monetary policy) to counteract the economic cycle Ц following Keynesian economics. At the microeconomic level there is debate about how to maximize efficiency, with some advocating laissez faire, to remove government distortions, while others advocate regulation, to reduce market failures and imperfections, particularly via internalizing externalities. The first fundamental welfare theorem provides some basis for the belief in efficiency of market economies, as it states that any perfectly competitive market equilibrium is Pareto efficient. Strictly speaking, however, this result is only valid in the absence of market imperfections, which are significant in real markets. Furthermore, Pareto efficiency is a minimal notion of optimality and does not necessarily result in a socially desirable distribution of resources, as it makes no statement about equality or the overall well-being of a society. [edit]Schools of thought Advocates of limited government, in the form laissez faire (little or no government role in the economy) follow from the 19th century philosophical tradition classical liberalism, and are particularly associated with the mainstream economic schools of classical economics (through the 1870s) and neoclassical economics (from the 1870s onwards), and with the heterodox Austrian school. Advocates of an expanded government role follow instead in alternative streams of progressivism; in the Anglosphere (English-speaking countries, notably the United States, United Kingdom, Canada, Australia and New Zealand) this is associated with institutional economics and, at the macroeconomic level, with Keynesian economics. In Germany the guiding philosophy is Ordoliberalism, in the Freiburg School of economics. [edit]Microeconomic Microeconomic reform are policies that aim to reduce economic distortions via deregulation, and increase economic efficiency. However, there is no clear theoretical basis for the belief that removing a market distortion will always increase economic efficiency. The Theory of the Second Best states that if there is some unavoidable market distortion in one sector, a move toward greater market perfection in another sector may actually decrease efficiency.