We develop a dynamic general equilibrium model to analyze the relationship between monetary policy, money demand, and unemployment. Our model succeeds in replicating the empirical fact of a downward sloping Phillips curve for low inflation rates and an upward sloping curve for high inflation rates. The reason is that low inflation rates make saving, as opposed to consumption, more attractive. Less consumption is associated with less output and therefore higher unemployment. To the contrary, when inflation exceeds a certain threshold, money is too costly to hold, which results in a decrease in output and an increase in unemployment.

Dissatisfied with the explanations of the business cycle provided by the Keynesian, monetarist, New Keynesian, and real business cycle schools, Edmund Phelps has developed from various existing strands-some modern and some classical--a radically different theory to account for the long periods of unemployment that have dogged the economies of the United States and Western Europe since the early 1970s. Phelps sees secular shifts and long swings of the unemployment rate as structural in nature. That is, they are typically the result of movements in the natural rate of unemployment (to which the equilibrium path is always tending) rather than of long-persisting deviations around a natural rate itself impervious to changing structure. What has been lacking is a "structuralist" theory of how the natural rate is disturbed by real demand and supply shocks, foreign and domestic, and the adjustments they set in motion. To study the determination of the natural rate path, Phelps constructs three stylized general equilibrium models, each one built around a distinct kind of asset in which firms invest and which is important for the hiring decision. An element of these models is the modern economics of the labor market whereby firms, in seeking to dampen their employees' propensities to quit and shirk, drive wages above market-clearing levels-the phenomenon of the "incentive wage"--and so generate involuntary unemployment in labor-market equilibrium. Another element is the capital market, where interest rates are disturbed by demand and supply shocks such as shifts in profitability, thrift, productivity, and the rate of technical progress and population increase. A general-equilibrium analysis shows how various real shocks, operating through interest rates upon the demand for employees and through the propensity to quit and shirk upon the incentive wage, act upon the natural rate (and thus equilibrium path). In an econometric and historical section, the new theory of economic activity is submitted to certain empirical tests against global postwar data. In the final section the author draws from the theory some suggestions for government policy measures that would best serve to combat structural slumps.

When labor is indivisible, there exist efficient outcomes with some agents randomly unemployed, as in Rogerson (1988). We integrate this idea into the modern theory of monetary exchange, where some trade occurs in centralized markets and some in decentralized markets, as in Lagos and Wright (2005). This delivers a general equilibrium model of unemployment and money, with explicit microeconomic foundations. We show that the implied relation between inflation and unemployment can be positive or negative, depending on simple preference conditions. Our Phillips curve provides a long-run, exploitable, trade-off for monetary policy; it turns out, however, that the optimal policy is the Friedman rule.

The definitive graduate textbook on modern macroeconomics Macroeconomic Theory is the most up-to-date graduate-level macroeconomics textbook available today. This revised second edition emphasizes the general equilibrium character of macroeconomics to explain effects across the whole economy while taking into account recent research in the field. It is the perfect resource for students and researchers seeking coverage of the most current developments in macroeconomics. Michael Wickens lays out the core ideas of modern macroeconomics and its links with finance. He presents the simplest general equilibrium macroeconomic model for a closed economy, and then gradually develops a comprehensive model of the open economy. Every important topic is covered, including growth, business cycles, fiscal policy, taxation and debt finance, current account sustainability, and exchange-rate determination. There is also an up-to-date account of monetary policy through inflation targeting. Wickens addresses the interrelationships between macroeconomics and modern finance and shows how they affect stock, bond, and foreign-exchange markets. In this edition, he also examines issues raised by the most recent financial crisis, and two new chapters explore banks, financial intermediation, and unconventional monetary policy, as well as modern theories of unemployment. There is new material in most other chapters, including macrofinance models and inflation targeting when there are supply shocks. While the mathematics in the book is rigorous, the fundamental concepts presented make the text self-contained and easy to use. Accessible, comprehensive, and wide-ranging, Macroeconomic Theory is the standard book on the subject for students and economists. The most up-to-date graduate macroeconomics textbook available today General equilibrium macroeconomics and the latest advances covered fully and completely Two new chapters investigate banking and monetary policy, and unemployment Addresses questions raised by the recent financial crisis Web-based exercises with answers Extensive mathematical appendix for at-a-glance easy reference This book has been adopted as a textbook at the following universities: American University Bentley College Brandeis University Brigham Young University California Lutheran University California State University - Sacramento Cardiff University Carleton University Colorado College Fordham University London Metropolitan University New York University Northeastern University Ohio University - Main Campus San Diego State University St. Cloud State University State University Of New York - Amherst Campus State University Of New York - Buffalo North Campus Temple University - Main Texas Tech University University of Alberta University Of Notre Dame University Of Ottawa University Of Pittsburgh University Of South Florida - Tampa University Of Tennessee University Of Texas At Dallas University Of Washington University of Western Ontario Wesleyan University Western Nevada Community College