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Asset Bubbles and Overlapping Generations

Jean Tirole
Econometrica
Vol. 53, No. 5 (Sep., 1985), pp. 1071-1100
Published by: The Econometric Society
DOI: 10.2307/1911012
Stable URL: http://www.jstor.org/stable/1911012
Page Count: 30
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Asset Bubbles and Overlapping Generations
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Abstract

The first part of this paper considers the interaction between productive and nonproductive savings in a growing economy. It employs an overlapping generations model with capital accumulation and various types of rents, and gives necessary and sufficient conditions for the existence of an aggregate bubble. The second part is a series of thoughts on the definition, nature, and consequences of asset bubbles. First, it derives some implications of bubbles for tests of asset pricing. Second, it demonstrates the specificity of money as an asset and shows that there is a fundamental dichtotomy in its formalization. Third, it discusses inefficiencies of price bubbles. Fourth, it shows that the financial definition of a bubble is not satisfactory for some assets.

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