Externalities in a Model of Perpetual Youth with Age-Dependent Productivity
AbstractThis paper investigates the effects of (``keeping up with the Joneses'' and ``learning-by-investing'') externalities, when labor productivity decreases with age. Within the framework of a continuous time overlapping generations model, the effects of the consumption externality on the propensity to consume, capital level and individual consumption growth rates are ambiguous and depend on the presence (absence) and sign of the ``generation replacement effect'' (GRE). The sign of the GRE is determined by the rate at which labor productivity declines. Both externalities generate distortions --- even with exogenous labor supply. Depending on the sign of the GRE, in case of a production externality, the consumption externality may raise efficiency by introducing an additional distortion. For a specific rate of labor productivity decline the GRE vanishes. In this case, externalities display the same effects in both a representative agent and the overlapping generations model.
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Bibliographic InfoPaper provided by University Library of Munich, Germany in its series MPRA Paper with number 11335.
Date of creation: 31 Oct 2008
Date of revision:
Externality; labor productivity; overlapping generations; perpetual youth; distortion; growth;
Find related papers by JEL classification:
- D91 - Microeconomics - - Intertemporal Choice - - - Intertemporal Household Choice; Life Cycle Models and Saving
- E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
- O40 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General
This paper has been announced in the following NEP Reports:
- NEP-ALL-2008-11-04 (All new papers)
- NEP-DGE-2008-11-04 (Dynamic General Equilibrium)
- NEP-MAC-2008-11-04 (Macroeconomics)
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