General Equilibrium, Overlapping Generations Models, and Optimal Growth Theory


Book Description

This book presents an original exposition of general equilibrium theory for advanced undergraduate and graduate-level students of economics. It contains detailed discussions of economic efficiency, competitive equilibrium, the first and second welfare theorems, the Kuhn-Tucker approach to general equilibrium, the Arrow-Debreu model, and rational expectations equilibrium and the permanent income hypothesis. Truman Bewley also treats optimal growth and overlapping generations models as special cases of the general equilibrium model. He uses the model and the first and second welfare theorems to explain the main ideas of insurance, capital theory, growth theory, and social security. It enables him to present a unified approach to portions of macro- as well as microeconomic theory. The book contains problems sets for most chapters.




A Solutions Manual for General Equilibrium, Overlapping Generations Models, and Optimal Growth Theory


Book Description

The Solutions Manual contains answers to problems in General Equilibrium, Overlapping Generations Models, and Optimal Growth Theory. Truman F. Bewley's book--a cornerstone of microeconomics, general equilibrium theory, and mathematical economics courses--covers the main premises behind insurance, capital theory, growth theory, and social security.




A Theory of Economic Growth


Book Description

This book provides an in-depth treatment of the overlapping generations model in economics incorporating production.




Dynamic Macroeconomic Theory


Book Description

The tasks of macroeconomics are to interpret observations on economic aggregates in terms of the motivations and constraints of economic agents and to predict the consequences of alternative hypothetical ways of administering government economic policy. General equilibrium models form a convenient context for analyzing such alternative government policies. In the past ten years, the strengths of general equilibrium models and the corresponding deficiencies of Keynesian and monetarist models of the 1960s have induced macroeconomists to begin applying general equilibrium models. This book describes some general equilibrium models that are dynamic, that have been built to help interpret time-series of observations of economic aggregates and to predict the consequences of alternative government interventions. The first part of the book describes dynamic programming, search theory, and real dynamic capital pricing models. Among the applications are stochastic optimal growth models, matching models, arbitrage pricing theories, and theories of interest rates, stock prices, and options. The remaining parts of the book are devoted to issues in monetary theory; currency-in-utility-function models, cash-in-advance models, Townsend turnpike models, and overlapping generations models are all used to study a set of common issues. By putting these models to work on concrete problems in exercises offered throughout the text, Sargent provides insights into the strengths and weaknesses of these models of money. An appendix on functional analysis shows the unity that underlies the mathematics used in disparate areas of rational expectations economics. This book on dynamic equilibrium macroeconomics is suitable for graduate-level courses; a companion book, Exercises in Dynamic Macroeconomic Theory, provides answers to the exercises and is also available from Harvard University Press.




Dynamic General Equilibrium Modeling


Book Description

Modern business cycle theory and growth theory uses stochastic dynamic general equilibrium models. In order to solve these models, economists need to use many mathematical tools. This book presents various methods in order to compute the dynamics of general equilibrium models. In part I, the representative-agent stochastic growth model is solved with the help of value function iteration, linear and linear quadratic approximation methods, parameterised expectations and projection methods. In order to apply these methods, fundamentals from numerical analysis are reviewed in detail. In particular, the book discusses issues that are often neglected in existing work on computational methods, e.g. how to find a good initial value. In part II, the authors discuss methods in order to solve heterogeneous-agent economies. In such economies, the distribution of the individual state variables is endogenous. This part of the book also serves as an introduction to the modern theory of distribution economics. Applications include the dynamics of the income distribution over the business cycle or the overlapping-generations model. In an accompanying home page to this book, computer codes to all applications can be downloaded.




Why Wages Don't Fall during a Recession


Book Description

A deep question in economics is why wages and salaries don't fall during recessions. This is not true of other prices, which adjust relatively quickly to reflect changes in demand and supply. Although economists have posited many theories to account for wage rigidity, none is satisfactory. Eschewing "top-down" theorizing, Truman Bewley explored the puzzle by interviewing--during the recession of the early 1990s--over three hundred business executives and labor leaders as well as professional recruiters and advisors to the unemployed. By taking this approach, gaining the confidence of his interlocutors and asking them detailed questions in a nonstructured way, he was able to uncover empirically the circumstances that give rise to wage rigidity. He found that the executives were averse to cutting wages of either current employees or new hires, even during the economic downturn when demand for their products fell sharply. They believed that cutting wages would hurt morale, which they felt was critical in gaining the cooperation of their employees and in convincing them to internalize the managers' objectives for the company. Bewley's findings contradict most theories of wage rigidity and provide fascinating insights into the problems businesses face that prevent labor markets from clearing. Table of Contents: Acknowledgments 1. Introduction 2. Methods 3. Time and Location 4. Morale 5. Company Risk Aversion 6. Internal Pay Structure 7. External Pay Structure 8. The Shirking Theory 9. The Pay of New Hires in the Primary Sector 10. Raises 11. Resistance to Pay Reduction 12. Experiences with Pay Reduction 13. Layoffs 14. Severance Benefits 15. Hiring 16. Voluntary Turnover 17. The Secondary Sector 18. The Unemployed 19. Information, Wage Rigidity, and Labor Negotiations 20. Existing Theories 21. Remarks on Theory 22. Whereto from Here? Notes References Index Reviews of this book: In Why Wages Don't Fall During A Recession, [Truman Bewley] tackles one of the oldest, and most controversial, puzzles in economics: why nominal wages rarely fall (and real wages do not fall enough) when unemployment is high. But he does so in a novel way, through interviews with over 300 businessmen, union leaders, job recruiters and unemployment counsellors in the north-eastern United States during the early 1990s recession...Mr. Bewley concludes that employers resist pay cuts largely because the savings from lower wages are usually outweighed by the cost of denting workers' morale: pay cuts hit workers' standard of living and lower their self-esteem. Falling morale raises staff turnover and reduces productivity...Mr. Bewley's theory has some interesting implications...[and] has a ring of truth to it. --The Economist Reviews of this book: This contribution to the growing literature on behavioral macroeconomics threatens to disturb the tranquil state of macroeconomic theory that has prevailed in recent years...Bewley's argument will be hard for conventional macroeconomists to ignore, partly because of the extraordinary thoroughness and honesty with which he evidently conducted his investigation, and the sheer volume of evidence he provides...Although Bewley's work will not settle the substantive debates related to wage rigidity, it is likely to have a profound influence on the way macroeconomists construct models. In particular, the concepts of morale, fairness, and money illusion are almost certain to play a big role in macroeconomic theory. His demonstration that there exist in reality simple, robust behavioral patters that cannot plausibly be founded on traditional maximizing behabior also raises the prospect of a more empirically oriented, more behavioral macroeconomics in the future. --Peter Howitt, journal of Economic Literature Reviews of this book: I think any scholar interested in labour markets and wage determination should read this well-written, lively, and highly stimulating book...[It] provides a fresh view and a lot of complementary background knowledge about how experienced people in the field see the employment relationship and what is actually crucial. Knowledge of this sort is all too rare in economics, and Truman Bewley's truly impressive study can serve as a role model for future investigations. --Simon G'chter, Journal of Institutional and Theoretical Economics To call this book a breath of fresh air is an understatement. The direct insights are fascinating, and Truman Bewley's use of them is sharp and insightful. Labor economists and macroeconomists have a lot to think about. --Robert M. Solow, Nobel Laureate, Institute Professor of Economics, Emeritus, Massachusetts Institute of Technology Truman Bewley set out to conduct a handful of interviews with business executives to gain some theoretical inspiration, and his project blossomed into over 300 interviews with business people, labor leaders and consultants. He is truly the accidental interviewer of economics. Time and again, he found that workers behave like people, not atomistic, selfish economic agents. His insights will engage and enrage economic theorists and empiricists for years to come. --Alan Krueger, Bendheim Professor of Economics and Public Affairs, Princeton University




Nonlinear Dynamics in Equilibrium Models


Book Description

Optimal growth theory studies the problem of efficient resource allocation over time, a fundamental concern of economic research. Since the 1970s, the techniques of nonlinear dynamical systems have become a vital tool in optimal growth theory, illuminating dynamics and demonstrating the possibility of endogenous economic fluctuations. Kazuo Nishimura's seminal contributions on business cycles, chaotic equilibria and indeterminacy have been central to this development, transforming our understanding of economic growth, cycles, and the relationship between them. The subjects of Kazuo's analysis remain of fundamental importance to modern economic theory. This book collects his major contributions in a single volume. Kazuo Nishimura has been recognized for his contributions to economic theory on many occasions, being elected fellow of the Econometric Society and serving as an editor of several major journals. Chapter “Introduction” is available open access under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License via link.springer.com.




Existence and Optimality of Competitive Equilibria


Book Description

This monograph is a systematic exposition of the authors' research on general equi librium models with an infinite number of commodities. It is intended to serve both as a graduate text on aspects of general equilibrium theory and as an introduction, for economists and mathematicians working in mathematical economics, to current research in a frontier area of general equilibrium theory. To this end, we have pro vided two introductory chapters on the basic economic model and the mathematical framework. The exercises at the end of each section complement the main exposition. Chapter one is a concise but substantiative discussion of the questions of exis tence and optimality of competitive equilibria in the Walrasian general equilibrium model of an economy with a finite number of households, firms and commodities. Our extension of this model to economies with an infinite number of commodities constitutes the core material of this book and begins in chapter three. Readers fa miliar with the Walrasian general equilibrium model as exposited in [13], [23J or [52J may treat chapter one as a handy reference for the main economic concepts and notions that are used throughout the book.




Handbook of Computable General Equilibrium Modeling


Book Description

In this collection of 17 articles, top scholars synthesize and analyze scholarship on this widely used tool of policy analysis, setting forth its accomplishments, difficulties, and means of implementation. Though CGE modeling does not play a prominent role in top US graduate schools, it is employed universally in the development of economic policy. This collection is particularly important because it presents a history of modeling applications and examines competing points of view. - Presents coherent summaries of CGE theories that inform major model types - Covers the construction of CGE databases, model solving, and computer-assisted interpretation of results - Shows how CGE modeling has made a contribution to economic policy




Macroeconomic Analysis


Book Description

A concise but rigorous and thorough introduction to modern macroeconomic theory. This book offers an introduction to modern macroeconomic theory. It is concise but rigorous and broad, covering all major areas in mainstream macroeconomics today and showing how macroeconomic models build on and relate to each other. The self-contained text begins with models of individual decision makers, proceeds to models of general equilibrium without and with friction, and, finally, presents positive and normative theories of economic policy. After a review of the microeconomic foundations of macroeconomics, the book analyzes the household optimization problem, the representative household model, and the overlapping generations model. It examines risk and the implications for household choices and macroeconomic outcomes; equilibrium asset returns, prices, and bubbles; labor supply, growth, and business cycles; and open economy issues. It introduces frictions and analyzes their consequences in the labor market, financial markets, and for investment; studies money as a unit of account, store of value, and medium of exchange; and analyzes price setting in general equilibrium. Turning to government and economic policy, the book covers taxation, debt, social security, and monetary policy; optimal fiscal and monetary policies; and sequential policy choice, with applications in capital income taxation, sovereign debt and default, politically motivated redistribution, and monetary policy biases. Macroeconomic Analysis can be used by first-year graduate students in economics and students in master's programs, and as a supplemental text for advanced courses.