In recent years there has been a growing interest in macro models with heterogeneity in information and complementarity in actions. These models deliver promising positive properties, such as heightened inertia and volatility. But they also raise important normative questions, such as whether the heightened inertia and volatility are socially undesirable, whether there is room for policies that correct the way agents use information in equilibrium, and what are the welfare effects of the information disseminated by the media or policy makers. We argue that a key to answering all these questions is the relation between the equilibrium and the socially optimal degrees of coordination. The former summarizes the private value from aligning individual decisions, whereas the latter summarizes the value that society assigns to such an alignment once all externalities are internalized.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
12778.
Length: Date of creation: Dec 2006 Date of revision: Handle: RePEc:nbr:nberwo:12778
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Find related papers by JEL classification: C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games D62 - Microeconomics - - Welfare Economics - - - Externalities D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
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