Bokus
Masanao Aoki, Hiroshi Yoshikawa, Ryzuo Sato - Reconstructing Macroeconomics, Häftad

Häftad, Engelska, 2011

Reconstructing Macroeconomics

A Perspective from Statistical Physics and Combinatorial Stochastic Processes

Av Masanao Aoki, Hiroshi Yoshikawa, Ryzuo Sato

Del i serien Japan-US Center UFJ Bank Monographs on International Financial Markets

754 kr

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Beskrivning
In this book, the authors treat macroeconomic models as composed of large numbers of micro-units or agents of several types and explicitly discuss stochastic dynamic and combinatorial aspects of interactions among them. In mainstream macroeconomics sound microfoundations for macroeconomics have meant incorporating sophisticated intertemporal optimization by representative agents into models. Optimal growth theory, once meant to be normative, is now taught as a descriptive theory in mainstream macroeconomic courses. In neoclassical equilibria flexible prices led the economy to the state of full employment and marginal productivities are all equated. Professors Aoki and Yoshikawa contrariwise show that such equilibria are not possible in economies with a large number of agents of heterogeneous types. They employ a set of statistical dynamical tools via continuous-time Markov chains and statistical distributions of fractions of agents by types available in the new literature of combinatorial stochastic processes, to reconstruct macroeconomic models.
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Masanao Aoki is Professor Emeritus in the Department of Economics at the University of California, Los Angeles. Hiroshi Yoshikawa is Professor of Economics at the University of Tokyo.

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Reviews of the hardback: 'Thoughtful macroeconomists are uncomfortably aware that consumers, firms, and workers vary widely in their local environments, perceptions, and beliefs. Ignoring this heterogeneity, as 'modern macro' does, is a likely source of systematic error. Aoki and Yoshikawa propose to repair this failure by modeling the macroeconomy explicitly as a cloud of interacting particles. The goal is to deduce the distributions of economic characteristics that describe the system as a whole. There are already some surprising beginning results, including a novel treatment of aggregate demand, and one can expect more when their approach is combined with standard economic reasoning. This is the start, not the finish, of a potentially far-reaching research program. It should excite the curiosity of all those thoughtful macroeconomists.' Robert M. Solow, Massachusetts Institute of Technology

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