Author: Christopher A. Sims
Publisher:
ISBN: 9783865580900
Category :
Languages : de
Pages : 32

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Author: Bartosz Maćkowiak
Publisher:
ISBN:
Category : Information theory in economics
Languages : en
Pages : 69

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We review the recent literature on rational inattention, identify the main theoretical mechanisms, and explain how it helps us understand a variety of phenomena across fields of economics. The theory of rational inattention assumes that agents cannot process all available information, but they can choose which exact pieces of information to attend to. Several important results in economics have been built around imperfect information. Nowadays, many more forms of information than ever before are available due to new technologies, and yet we are able to digest little of it. Which form of imperfect information we possess and act upon is thus largely determined by which information we choose to attend to. These choices are driven by current economic conditions and imply behavior that features numerous empirically supported departures from standard models. Combining these insights about human limitations with the optimizing approach of neoclassical economics yields a new, generally applicable model.

Author: Mark Dean
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Laura L. Veldkamp
Publisher: Princeton University Press
ISBN: 140084049X
Category : Business & Economics
Languages : en
Pages : 181

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An authoritative graduate textbook on information choice, an exciting frontier of research in economics and finance Most theories in economics and finance predict what people will do, given what they know about the world around them. But what do people know about their environments? The study of information choice seeks to answer this question, explaining why economic players know what they know—and how the information they have affects collective outcomes. Instead of assuming what people do or don't know, information choice asks what people would choose to know. Then it predicts what, given that information, they would choose to do. In this textbook, Laura Veldkamp introduces graduate students in economics and finance to this important new research. The book illustrates how information choice is used to answer questions in monetary economics, portfolio choice theory, business cycle theory, international finance, asset pricing, and other areas. It shows how to build and test applied theory models with information frictions. And it covers recent work on topics such as rational inattention, information markets, and strategic games with heterogeneous information. Illustrates how information choice is used to answer questions in monetary economics, portfolio choice theory, business cycle theory, international finance, asset pricing, and other areas Teaches how to build and test applied theory models with information frictions Covers recent research on topics such as rational inattention, information markets, and strategic games with heterogeneous information

Author: Kurt F. Lewis
Publisher:
ISBN:
Category :
Languages : en
Pages : 32

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Author: Roc Armenter
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Bartosz Adam Mackowiak
Publisher:
ISBN:
Category : Kalman filtering
Languages : en
Pages : 27

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Dynamic rational inattention problems used to be difficult to solve. This paper provides simple, analytical results for dynamic rational inattention problems. We start from the benchmark rational inattention problem. An agent tracks a variable of interest that follows a Gaussian process. The agent chooses how to pay attention to this variable. The agent aims to minimize, say, the mean squared error subject to a constraint on information flow, as in Sims (2003). We prove that if the variable of interest follows an ARMA(p,q) process, the optimal signal is about a linear combination of {Xt,...,Xt-p+1} and {et,...... et-q+1}, where Xt denotes the variable of interest and et)denotes its period t innovation. The optimal signal weights can be computed from a simple extension of the Kalman filter: the usual Kalman filter equations in combination with first-order conditions for the optimal signal weights. We provide several analytical results regarding those signal weights. We also prove the equivalence of several different formulations of the information flow constraint. We conclude with general equilibrium applications from Macroeconomics.

Author: Philippe Aghion
Publisher: Princeton University Press
ISBN: 9780691094854
Category : Biography & Autobiography
Languages : en
Pages : 596

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Assembling some of the leading figures in the field of macroeconomics, this text highlights the continuing influence of the ideas of Edmund Phelps since the early 1960s. The contributions address many of the most important current areas of macroeconomic research in 2003.

Author: Bartosz Maćkowiak
Publisher:
ISBN:
Category : Economics
Languages : en
Pages : 42

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A recent growing body of studies shows that many important phenomena in economics are, or can be, driven by the fact that humans cannot digest all available information, but they can choose which exact pieces of information to attend to. Such phenomena span macroeconomics, finance, labor economics, political economy, and beyond. People's choices of what information to attend to, i.e., what optimal heuristic to use, are driven by current economic conditions and determine the form of mistakes that they make. Combining these behavioral insights together with optimizing approaches of classical economics yields a new generally applicable model. The implied behavior features numerous types of empirically supported departures from existing classical models, is potentially highly practical for answering policy questions, and motivates further empirical work. One distinction from most models in behavioral economics is that this model allows for studying the adaptation of agents' behavioral biases due to changes in policy or economic conditions.

Author: Gilles Saint-Paul
Publisher:
ISBN:
Category : Information theory in economics
Languages : en
Pages : 0

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