In macroeconomics, the welfare cost of inflation comprises the changes in social welfare caused by inflation.
The traditional approach, developed by Bailey (1956) and Friedman (1969), treats real money balances as a consumption good and inflation as a tax on real balances. [1] [2] This approach measures the welfare cost by computing the appropriate area under the money demand curve. Fischer (1981) and Lucas (1981), find the cost of inflation to be low. [3] Fischer computes the deadweight loss generated by an increase in inflation from zero to 10 percent as just 0.3 percent of GDP using the monetary base as the definition of money. [4] Lucas places the cost of a 10 percent inflation at 0.45 percent of GDP using M1 as the measure of money. Lucas (2000) revised his estimate upward, to slightly less than 1 percent of GDP. [5] Ireland (2009) extends this line of analysis to study the recent behavior of U.S. money demand. [6] [7]
Structural models are a recent alternative to econometric estimates of the triangle under an estimated money demand curve. Cooley and Hansen (1989) calibrate a cash-in-advance version of a business cycle model. [8] They find that the welfare cost of 10 percent inflation is about 0.4 percent of GNP. [9] [10] [11] [12]
Craig and Rocheteau (2008) argue that a search-theoretic framework is necessary for appropriately measuring the welfare cost of inflation. [13] Lagos and Wright (2005) model monetary exchange and provide estimates for the annual cost of 10 percent inflation to be between 3 and 4 percent of GDP. [14]
Macroeconomics is a branch of economics that deals with the performance, structure, behavior, and decision-making of an economy as a whole. This includes regional, national, and global economies. Macroeconomists study topics such as output/GDP and national income, unemployment, price indices and inflation, consumption, saving, investment, energy, international trade, and international finance.
In economics, inflation is a general increase of the prices of goods and services in an economy. This is usually measured using the consumer price index (CPI). When the general price level rises, each unit of currency buys fewer goods and services; consequently, inflation corresponds to a reduction in the purchasing power of money. The opposite of CPI inflation is deflation, a decrease in the general price level of goods and services. The common measure of inflation is the inflation rate, the annualized percentage change in a general price index. As prices faced by households do not all increase at the same rate, the consumer price index (CPI) is often used for this purpose.
New Keynesian economics is a school of macroeconomics that strives to provide microeconomic foundations for Keynesian economics. It developed partly as a response to criticisms of Keynesian macroeconomics by adherents of new classical macroeconomics.
Robert Emerson Lucas Jr. was an American economist at the University of Chicago. Widely regarded as the central figure in the development of the new classical approach to macroeconomics, he received the Nobel Prize in Economics in 1995 "for having developed and applied the hypothesis of rational expectations, and thereby having transformed macroeconomic analysis and deepened our understanding of economic policy". He was characterized by N. Gregory Mankiw as "the most influential macroeconomist of the last quarter of the 20th century". In 2020, he ranked as the 10th most cited economist in the world.
The Phillips curve is an economic model, named after Bill Phillips, that correlates reduced unemployment with increasing wages in an economy. While Phillips did not directly link employment and inflation, this was a trivial deduction from his statistical findings. Paul Samuelson and Robert Solow made the connection explicit and subsequently Milton Friedman and Edmund Phelps put the theoretical structure in place.
In economics, nominal rigidity, also known as price-stickiness or wage-stickiness, is a situation in which a nominal price is resistant to change. Complete nominal rigidity occurs when a price is fixed in nominal terms for a relevant period of time. For example, the price of a particular good might be fixed at $10 per unit for a year. Partial nominal rigidity occurs when a price may vary in nominal terms, but not as much as it would if perfectly flexible. For example, in a regulated market there might be limits to how much a price can change in a given year.
The Taylor rule is a monetary policy targeting rule. The rule was proposed in 1992 by American economist John B. Taylor for central banks to use to stabilize economic activity by appropriately setting short-term interest rates.
A macroeconomic model is an analytical tool designed to describe the operation of the problems of economy of a country or a region. These models are usually designed to examine the comparative statics and dynamics of aggregate quantities such as the total amount of goods and services produced, total income earned, the level of employment of productive resources, and the level of prices.
Fernando Enrique Alvarez is an Argentine macroeconomist. He is professor of economics at the University of Chicago. He received his B.A. in Economics at Universidad Nacional de La Plata in 1989 and his Ph.D. from the University of Minnesota in 1994. He was elected a Fellow of the Econometric Society in 2008. He was named a Fellow of the American Academy of Arts and Sciences in 2018.
Ricardo A. M. R. Reis is a Portuguese economist and the A. W. Phillips professor of economics at the London School of Economics. In a 2013 ranking of young economists by Glenn Ellison, Reis was considered the top economist with a PhD between 1996 and 2004., and in 2016 he won the Germán Bernácer Prize for top European-born economist researching macroeconomics and finance. He writes a weekly op-ed for the Portuguese newspaper Jornal de Notícias and Expresso, and participates frequently in economic debates in Portugal.
John Brian Taylor is the Mary and Robert Raymond Professor of Economics at Stanford University, and the George P. Shultz Senior Fellow in Economics at Stanford University's Hoover Institution.
The Friedman rule is a monetary policy rule proposed by Milton Friedman. Friedman advocated monetary policy that would result in the nominal interest rate being at or very near zero. His rationale was that the opportunity cost of holding money faced by private agents should equal the social cost of creating additional fiat money. Assuming that the marginal cost of creating additional money is zero, nominal rates of interest should also be zero. In practice, this means that a central bank should seek a rate of inflation or deflation equal to the real interest rate on government bonds and other safe assets, to make the nominal interest rate zero.
The aggregate demand–inflation adjustment model builds on the concepts of the IS–LM model and the AD–AS models, essentially in terms of changing interest rates in response to fluctuations in inflation rather than as changes in the money supply in response to changes in the price level.
In economics, an agent is an actor in a model of some aspect of the economy. Typically, every agent makes decisions by solving a well- or ill-defined optimization or choice problem.
The Lucas islands model is an economic model of the link between money supply and price and output changes in a simplified economy using rational expectations. It delivered a new classical explanation of the Phillips curve relationship between unemployment and inflation. The model was formulated by Robert Lucas, Jr. in a series of papers in the 1970s.
Dynamic stochastic general equilibrium modeling is a macroeconomic method which is often employed by monetary and fiscal authorities for policy analysis, explaining historical time-series data, as well as future forecasting purposes. DSGE econometric modelling applies general equilibrium theory and microeconomic principles in a tractable manner to postulate economic phenomena, such as economic growth and business cycles, as well as policy effects and market shocks.
Macroeconomic theory has its origins in the study of business cycles and monetary theory. In general, early theorists believed monetary factors could not affect real factors such as real output. John Maynard Keynes attacked some of these "classical" theories and produced a general theory that described the whole economy in terms of aggregates rather than individual, microeconomic parts. Attempting to explain unemployment and recessions, he noticed the tendency for people and businesses to hoard cash and avoid investment during a recession. He argued that this invalidated the assumptions of classical economists who thought that markets always clear, leaving no surplus of goods and no willing labor left idle.
Dennis J. Snower is an American-German economist, specialising in macroeconomic theory and policy, labor economics, digital governance, social economics, and the psychology of economic decisions in "caring economics". He is President of the Global Solutions Initiative in Berlin, Professorial Research Fellow at the Institute for New Economic Thinking at Oxford University, Fellow at the New Institute in Hamburg, and Non-resident Fellow of the Brookings Institution in Washington, D.C. He is former president of the Kiel Institute for the World Economy. His prominent labor research explores the role of “insiders” and “outsiders” in generating unemployment and macroeconomic fluctuations; his socio-economic research examines how social groups shape economic behavior; his psycho-economic research explains how economic decisions depend on psychological motives; and his macroeconomic research investigates why inflation and unemployment can move in opposite directions even in the long run.
This glossary of economics is a list of definitions of terms and concepts used in economics, its sub-disciplines, and related fields.
Jón Steinsson is Chancellor's Professor of Economics at University of California, Berkeley, a research associate and co-director of the Monetary Economics program of the National Bureau of Economic Research, and associate editor of both American Economic Review: Insights, and the Quarterly Journal of Economics. He received his PhD in economics from Harvard and his AB from Princeton.