Heterogeneous probabilities in complete asset markets
We show in this paper how, in a model of assets exchange in complete competitive markets, heterogeneity of the agentâ€™s sub jective probabilities generates aggregate expenditures for Arrow-Debreu securities that have the gross substitutability property, with the consequences that competitive equilibrium is unique, stable in any tatonnement process, and that the weak axiom of revealed preferences is satisï¬ed in the aggregate. For this result, heterogeneity is required to be highest among people who have the largest risk aversion
|Date of creation:||01 Mar 1998|
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