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1.
Ambiguity aversion and the absence of wage indexation 总被引:1,自引:0,他引:1
This paper analyzes optimal wage contracting assuming agents are not subjective expected utility maximizers but are, instead, ambiguity (or uncertainty) averse decision makers who maximize Choquet expected utility. We show that such agents will choose not to include any indexation coverage in their wage contracts even when inflation is uncertain, unless the perceived inflation uncertainty is high enough. Significantly, the exercise does not presume any exogenous costs (e.g., transactions costs) of including indexation links. 相似文献
2.
Jean-Marc Tallon 《Economic Theory》1995,7(1):113-124
Summary. This paper analyzes through a simple two-period model the fact that, if some agents hold inside money intertemporally, the second-period “normalization” matters. Thus, there are several equilibria of the second-period economy, indexed by the level of inflation. A concept of equilibrium acknowledging this fact, and requiring that agents put some weight on any of the possible second-period equilibrium price vectors is developed. Such an equilibrium is shown to exist, and is illustrated by an example. 相似文献
3.
Summary. We show, in the Choquet expected utility model, that preference for diversification, that is, convex preferences, is equivalent
to a concave utility index and a convex capacity. We then introduce a weaker notion of diversification, namely “sure diversification.”
We show that this implies that the core of the capacity is non-empty. The converse holds under concavity of the utility index,
which is itself equivalent to the notion of comonotone diversification, that we introduce. In an Anscombe-Aumann setting,
preference for diversification is equivalent to convexity of the capacity and preference for sure diversification is equivalent
to non-empty core. In the expected utility model, all these notions of diversification are equivalent and are represented
by the concavity of the utility index.
Received: July 27, 1999; revised version: November 7, 2000 相似文献
4.
Jean-Marc Tallon 《Economic Theory》1996,7(1):113-124
Summary This paper analyzes through a simple two-period model the fact that, if some agents hold inside money intertemporally, the second-period normalization matters. Thus, there are several equilibria of the second-period economy, indexed by the level of inflation. A concept of equilibrium acknowledging this fact, and requiring that agents put some weight on any of the possible second-period equilibrium price vectors is developed. Such an equilibrium is shown to exist, and is illustrated by an example.This a revised version of chapter three of my Ph.D. dissertation. I would like to thank David Cass, Atsushi Kajii, George Mailath and Shinichi Suda for helpful discussions and comments. Thanks are also due to Jean-Michel Grandmont who pointed out mistakes in a previous version. All remaining mistakes are of course my own. Financial support from a CARESS scholarship at the University of Pennsylvania is gratefully acknowledged. 相似文献
5.
6.
We develop a model of trade with imperfect competition to study the welfare implications in developing and developed countries
of the asymmetry in attitudes towards foreign products. In the developed country, consumers benefit from a better perception
of foreign products while the rental rate of capital declines as long as the location of capital remains unchanged. However,
when capital is mobile, the developing country hosts more and more capital at the expense of the developed country as perception
of varieties produced in the developed country improves and the surplus of consumers in the developed country can decrease. 相似文献
7.
Using a multivariate distribution of traders' information with correlations, we specify the traders' bidding strategies on tenders of European soft wheat intervention stocks. We show that correlations may have opposing effects on the traders' bidding strategy, depending on their valuation of the grain. This structural approach allows us to estimate the traders' strategies using generalized method of moments procedures. 相似文献
8.
Nicolas Eber 《Journal of Economics》1999,69(2):159-171
When firms can discriminate between old and new customers and when multiperiod binding commitments are too costly, the effects of switching costs may be mitigated thanks to implicit contracts offered (competitively) by firms in equilibrium and backed by reputation. 相似文献
9.
This note explores a vertical differentiation model with a continuous non-uniform consumers' distribution. First, a result concerning the finiteness property obtained with uniform consumers' distribution is generalized. Second, we prove an existence result of price equilibrium when the distribution is concave. Finally, we exhibit a counter-example to the existence of price equilibrium to show that the concavity assumption is not superfluous. 相似文献
10.
Jean-Marc Bourgeon Robert G. Chambers 《American journal of agricultural economics》2003,85(3):590-604
The implementability of area-yield insurance contracts in the presence of symmetric and asymmetric information about the farmer's "beta" linking his yield to the risk-pool's yield is examined. In the presence of fixed costs and symmetric information Mahul's result that optimality requires setting the slope of the indemnity schedule equal to each farmer's beta is confirmed. When there is asymmetric information between the insurer and the farmer, however, this full-insurance contract is vulnerable to adverse selection, and therefore may not be implementable for general cost structures. The optimal area-yield insurance contract under asymmetric information is characterized. 相似文献