|
EconStor >
ifo Institut – Leibniz-Institut für Wirtschaftsforschung an der Universität München >
CESifo Working Papers, CESifo Group Munich >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10419/30728
|
| | |
| Title: | | Measuring agents' reaction to private and public information in games with strategic complementarities  |
| Authors: | | Cornand, Camille Heinemann, Frank |
| Issue Date: | | 2010 |
| Series/Report no.: | | CESifo working paper 2947 |
| Abstract: | | In games with strategic complementarities, public information about the state of the world has a larger impact on equilibrium actions than private information of the same precision, because the former is more informative about the likely behavior of others. This may lead to welfare-reducing 'overreactions' to public signals. We present an experiment based on a game of Morris and Shin (2002), in which agents' optimal actions are a weighted average of the fundamental state and their expectations of other agents' actions. We measure the responses to public and private signals and find that, on average, subjects put a larger weight on the public signal. However, the weight is smaller than in equilibrium and closer to level-2 reasoning. Stated second order beliefs indicate that subjects underestimate the information contained in public signals about other players' beliefs, but this can account only for a part of the observed deviation of behavior from equilibrium. In the extreme case of a pure coordination game, subjects still use their private signals, preventing full coordination. Reconsidering the welfare effects of public and private information theoretically, we find for level-2 reasoning that increasing precision of public signals always raises expected welfare, while increasing precision of private signals may reduce expected welfare if coordination is socially desirable. |
| Subjects: | | coordination games strategic uncertainty private information public information higher-order beliefs levels of reasoning |
| JEL: | | C92 D82 D84 |
| Document Type: | | Working Paper |
| Appears in Collections: | | CESifo Working Papers, CESifo Group Munich
|
| |
| | |
Download bibliographical data as:
BibTeX
|
| |
Share on:http://hdl.handle.net/10419/30728
|
Items in EconStor are protected by copyright, with all rights reserved, unless otherwise indicated.
|