Interim efficient allocations under uncertainty
Publication Type
Journal Article
Publication Date
1-2009
Abstract
This paper considers an exchange economy under uncertainty with asymmetric information. Uncertainty is represented by multiple priors and posteriors of agents who have either Bewley's incomplete preferences or Gilboa-Schmeidler's maximin expected utility preferences. The main results characterize interim efficient allocations under uncertainty; that is, they provide conditions on the sets of posteriors, thus implicitly on the way how agents update the sets of priors, for non-existence of a trade which makes all agents better off at any realization of private information. For agents with the incomplete preferences, the condition is necessary and sufficient, but for agents with the maximin expected utility preferences, the condition is sufficient only. A couple of necessary conditions for the latter case are provided.
Keywords
Multiple priors, Interim efficiency, No trade, Dynamic consistency, Rectangular prior set
Discipline
Economic Theory
Research Areas
Economic Theory
Publication
Journal of Economic Theory
Volume
144
Issue
1
First Page
337
Last Page
353
ISSN
0022-0531
Identifier
10.1016/j.jet.2008.05.006
Publisher
Elsevier
Citation
KAJII, Atsushi and UI, Takashi.
Interim efficient allocations under uncertainty. (2009). Journal of Economic Theory. 144, (1), 337-353.
Available at: https://ink.library.smu.edu.sg/soe_research/1850
Additional URL
https://doi.org/10.1016/j.jet.2008.05.006