Underemployment of Resources and Self-Fulfilling Beliefs: Nonwalrasian Allocations at Walrasian Prices

Alessandro Citanna, Hervé Crès, Jacques Dreze, P. Jean-Jacques Herings and Antonio Villanacci
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Alessandro Citanna: GREGH - Groupement de Recherche et d'Etudes en Gestion à HEC - HEC Paris - Ecole des Hautes Etudes Commerciales - CNRS - Centre National de la Recherche Scientifique
Antonio Villanacci: UniFI - Università degli Studi di Firenze = University of Florence = Université de Florence

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Abstract: In this paper the existence of unemployment is partly explained as being the result of coordination failures. It is shown that as a result of self-fulfilling pessimistic expectations, even at Walrasian prices, a continuum of equilibria results, among which an equilibrium with approximately no trade and a Walrasian equilibrium. These coordination failures also arise at other price systems, but then unemployment is the result of both a wrong price system and coordination failures. Some properties of the set of equilibria are analyzed. Generically, there exists a continuum of non-indifferent equilibrium allocations. Under a condition implied by gross substitutability, there exists a continuum of equilibrium allocations in the neighborhood of a competitive allocation, when prices are Walrasian. For a specialized economy, a dynamic illustration is offered.

Date: 2001
Note: View the original document on HAL open archive server: https://sciencespo.hal.science/hal-01064886v1
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Related works:
Working Paper: Underemployment of Resources and Self-Fulfilling Beliefs: Nonwalrasian Allocations at Walrasian Prices (2001)
Working Paper: Underemployment of resources and self-fulfilling beliefs: non-Walrasian allocations at Walrasian prices (2001)
Working Paper: Underemployment of resources and self-fulfilling beliefs: Nonwalrasian allocations at walrasian prices
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