Rational Herds

Economic Models of Social Learning

Inbunden, Engelska, 2003

AvChristophe P. Chamley,Christophe P. (Boston University) Chamley

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Penguins jumping off a cliff, economic forecasters and financial advisors speculating against a currency, and farmers using traditional methods in India are all practising social learning. Such learning from the behavior of others may and does lead to herds, crashes, and booms. These issues have become, over the last ten years, an exciting field of research in theoretical and applied economics, finance, and in other social sciences. This book provides both an informal introduction and in-depth insights into the subject. Each chapter is devoted to a separate issue: individuals learn from the observations of actions, the outcomes of these actions, and from what others say. They may delay or make an immediate decision; they may compete against others or gain from cooperation; they make decisions about investment, crop choices, and financial investments. The book highlights the similarities and the differences between the various cases.

Produktinformation

Utgivningsdatum2003-11-24
Mått178 x 254 x 24 mm
Vikt940 g
FormatInbunden
SpråkEngelska
Antal sidor418
FörlagCambridge University Press
ISBN9780521824019

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1. Introduction; Part I. Social Learning: 2. Bayesian tools; 3. Social learning with a common memory; 4. Cascades and herds; 5. Limited memories; 6. Delays; 7. More delays; 8. Outputs; 9. Networks and diffusion; 10. Words; Part II. Coordination: 11. Guessing to coordinate; 12. Learning to coordinate; 13. Delays and payoff externalities; Part III. Financial Herding: 14. Sequences of financial trades; 15. Gaussian financial markets; 16. Financial frenzies.

'This book is a notable achievement. It is ambitious in scope, and provides substantive understanding of how different models in the area work. It offers a deep understanding of the range of validity of different conclusions in the literature and the relations between different possible model results. The general economist will find a rigorous and lucid in-depth introduction to the field. Even experts in the field will find here many challenges as well as enlightenment. Chamley's book promises to be the key reference on rational models of social learning in economics for some time to come.' David Hirshleifer, Ohio State University