Evolutionary Games and Equilibrium Selection


Book Description

The author examines the interplay between evolutionary game theory and the equilibrium selection problem in noncooperative games. Evolutionary game theory is one of the most active and rapidly growing areas of research in economics. Unlike traditional game theory models, which assume that all players are fully rational and have complete knowledge of details of the game, evolutionary models assume that people choose their strategies through a trial-and-error learning process in which they gradually discover that some strategies work better than others. In games that are repeated many times, low-payoff strategies tend to be weeded out, and an equilibrium may emerge. Larry Samuelson has been one of the main contributors to the evolutionary game theory literature. In Evolutionary Games and Equilibrium Selection, he examines the interplay between evolutionary game theory and the equilibrium selection problem in noncooperative games. After providing an overview of the basic issues of game theory and a presentation of the basic models, the book addresses evolutionary stability, the dynamics of sample paths, the ultimatum game, drift, noise, backward and forward induction, and strict Nash equilibria.




An Evolutionary Theory of Economic Change


Book Description

This book contains the most sustained and serious attack on mainstream, neoclassical economics in more than forty years. Nelson and Winter focus their critique on the basic question of how firms and industries change overtime. They marshal significant objections to the fundamental neoclassical assumptions of profit maximization and market equilibrium, which they find ineffective in the analysis of technological innovation and the dynamics of competition among firms. To replace these assumptions, they borrow from biology the concept of natural selection to construct a precise and detailed evolutionary theory of business behavior. They grant that films are motivated by profit and engage in search for ways of improving profits, but they do not consider them to be profit maximizing. Likewise, they emphasize the tendency for the more profitable firms to drive the less profitable ones out of business, but they do not focus their analysis on hypothetical states of industry equilibrium. The results of their new paradigm and analytical framework are impressive. Not only have they been able to develop more coherent and powerful models of competitive firm dynamics under conditions of growth and technological change, but their approach is compatible with findings in psychology and other social sciences. Finally, their work has important implications for welfare economics and for government policy toward industry.




Modern Evolutionary Economics


Book Description

Evolutionary economics sees the economy as always in motion with change being driven largely by continuing innovation. This approach to economics, heavily influenced by the work of Joseph Schumpeter, saw a revival as an alternative way of thinking about economic advancement as a result of Richard Nelson and Sidney Winter's seminal book, An Evolutionary Theory of Economic Change, first published in 1982. In this long-awaited follow-up, Nelson is joined by leading figures in the field of evolutionary economics, reviewing in detail how this perspective has been manifest in various areas of economic inquiry where evolutionary economists have been active. Providing the perfect overview for interested economists and social scientists, readers will learn how in each of the diverse fields featured, evolutionary economics has enabled an improved understanding of how and why economic progress occurs.




Economic Evolution and Equilibrium


Book Description

This work uses various model frameworks to study the evolution of equilibria in an open loop evolving economy in which the model characteristics evolve without any directional restrictions except for continuity. Applying mathematical methods, it is shown that equilibria can always be adapted in a piecewise gradual, non bang-bang way.




Evolutionary Spatial Economics


Book Description

A crucial question in contemporary economics concerns where economic activities will locate and relocate themselves in the future. This comprehensive, innovative book applies an evolutionary framework to spatial economics, arguing against the prevailing neoclassical equilibrium model, providing important concrete and theoretical insights, and illuminating areas of future enquiry.




The Evolution of Economies


Book Description

It is clear even to casual observation that economies evolve from year to year and over centuries. Yet mainstream economic theory assumes that economies always move towards equilibrium. One consequence of this is that mainstream theory is unable to deal with economic history. The Evolution of Economies provides a clear account of how economies evolve under a process of support-bargaining and money-bargaining. Both support-bargaining and money-bargaining are situation-related - people determine their interests and actions by reference to their present circumstances. This gives the bargaining system a natural evolutionary dynamic. Societies evolve from situation to situation. Historical change follows this evolutionary course. A central chapter of the book applies the new theory in a re-evaluation of the industrial revolution in Britain, showing how specialist money-bargaining agencies, in the form of companies, evolved profitable formats and displaced landowners as the leading sources of employment and economic necessities. Companies took advantage of the evolution of technology to establish effective formats. The book also seeks to establish how it came about that a ‘mainstream’ theory was developed that is so wildly at odds with the observable features of economic history and economic exchange. Theory-making is described as a process of ‘intellectual support-bargaining’ in which theory is shaped to the interests of its makers. The work of major classical and neoclassical economists is contested as incompatible with the idea of an evolving money-bargaining system. The book reviews attempts to derive an evolutionary economic theory from Darwin’s theory of evolution by natural selection. Neoclassical economic theory has had enormous influence on the governance of societies, principally through its theoretical endorsement of the benefits of ‘free markets’. An evolutionary account of economic processes should change the basis of debate. The theory presented here will be of interest immediately to all economists, whether evolutionary, heterodox or neoclassical. It will facilitate the work of economic historians, who complain that current theory gives no guidance for their historical investigations. Beyond the confines of professional theory-making, many will find it a revelatory response to questions that have hitherto gone unanswered.




The Theory of General Economic Equilibrium


Book Description

This book brings together the author's pioneering work, written over the last twenty years, on the use of differential methods in general equilibrium theory.




The Guidance of an Enterprise Economy


Book Description

A rigorous theory of money, credit, and bankruptcy in the context of a mixed economy, uniting Walrasian general equilibrium with macroeconomic dynamics and Schumpeterian innovation. This book offers a rigorous study of control, guidance, and coordination problems of an enterprise economy, with attention to the roles of money and financial institutions. The approach is distinctive in drawing on game theory, methods of physics and experimental gaming, and, more generally, a broader evolutionary perspective from the biological and behavioral sciences. The proposed theory unites Walrasian general equilibrium with macroeconomic dynamics and Schumpeterian innovation utilizing strategic market games. Problems concerning the meaning of rational economic behavior and the concept of solution are noted. The authors argue that process models of the economy can be built that are consistent with the general equilibrium system but become progressively more complex as new functions are added. Explicit embedding of the economy within the framework of government and society provides a natural, both formal and informal, control system. The authors describe how to build and analyze multistate models with simple assumptions about behavior, and develop a general modeling methodology for the construction of models as playable games.




The Invisible Hand


Book Description

This study of the fundamental theoretical underpinnings of modern economies examines how economists define and categorize the market. It suggests that modeling a social science such as economics on the physical/mathematical sciences has created intractable problems, and that the basic structure of the theory needs rethinking.A meticulously researched work in the field of mathematical economics and pure theory, The Invisible Hand traces the evolution of general economic equilibrium theory in its rich interaction with the physical sciences over a period of more than 150 years. The authors discuss how the "invisible hand" that balances physical processes was inspiration and model for the creation of general economic equilibrium theory.Ingrao and Israel review fundamental concepts of the theory, showing how its early forms, strictly analogous to mechanical equilibrium, arose from the cultural atmosphere generated by Newtonianism and the French Enlightenment. They describe developments and changes in the theory from the work of Leon Walras and Vilfredo Pareto through restructuring by the Vienna group and John Von Neumann and the contributions of the Robbins group at the London School of Economics, to its current formulations in the work of Irving Fisher, Paul Samuelson, Kenneth Arrow, and Gerard Debreu.Concluding chapters survey the results obtained in attempts to deal with questions of the existence of equilibrium, its uniqueness, and the problem of global stability. Ingrao and Israel find that the theory has arrived at a dead end, which raises serious doubts about the internal consistency of the basic model.Bruna Ingrao is Associate Professor of Economics at the University of Sassari and Giorgio Israel is Associate Professor of Mathematics at the University of Rome.




Population Games and Evolutionary Dynamics


Book Description

Evolutionary game theory studies the behaviour of large populations of strategically interacting agents & is used by economists to predict in settings where traditional assumptions about the rationality of agents & knowledge may be inapplicable.