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Economic Growth with BubblesAlberto MartinUniversitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI); Centre for Economic Policy Research (CEPR) Jaume VenturaUniversitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI); Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER) April 2010 CEPR Discussion Paper No. DP7770 Abstract: We develop a stylized model of economic growth with bubbles. In this model, financial frictions lead to equilibrium dispersion in the rates of return to investment. During bubbly episodes, relatively inefficient investors demand bubbles while relatively efficient investors supply them. Because of this, bubbly episodes channel resources towards efficient investment raising the growth rates of capital and output. The model also illustrates that the existence of bubbly episodes requires some investment to be dynamically inefficient: otherwise, there would be no demand for bubbles. This dynamic inefficiency, however, might be generated by an expansionary episode itself.
Number of Pages in PDF File: 35 Keywords: asset bubbles, dynamic inefficiency, economic growth, financial frictions, pyramid schemes JEL Classification: E32, E44, O40 working papers seriesDate posted: May 19, 2010Suggested CitationContact Information
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