Creator: Goenka, Aditya and Spear, Stephen E. Series: Finance, fluctuations, and development Abstract:
This paper develops a dynamic model of general imperfect competition by embedding the Shapley-Shubik model of market games into an overlapping generations framework. Existence of an open market equilibrium where there is trading at each post is demonstrated when there are an arbitrary (finite) number of commodities in each period and an arbitrary (finite) number of consumers in each generation. The open market equilibria are fully characterized when there is a single consumption good in each period and it is shown that stationary open market equilibria exist if endowments are not Pareto optimal. Two examples are also given. The first calculates the stationary equilibrium in an economy, and the second shows that the on replicating the economy the stationary equilibria converge to the unique non-autarky stationary equilibrium in the corresponding Walrasian overlapping generations economy. Preliminary on-going work indicates the possibility of cycles and other fluctuations even in the log-linear economy.
关键词: General equilibirum theory, Game theory, and Overlapping generations model 学科: D50 - General equilibrium and disequilibrium - General, C72 - Game theory and bargaining theory - Noncooperative games, and D91 - Intertemporal choice and growth - Intertemporal consumer choice ; Life cycle models and saving
Creator: Kahn, James A. (James Allan) and Lim, Jong-Soo Series: Conference on economics and politics Abstract:
This paper analyzes the political economy of growth as an issue of intergenerational distribution. The first part of the paper develops a model of endogenous growth via human capital accumulation in an overlapping generations setting. Equilibrium growth is inefficient due to the presence of an intergenerational externality. We characterize the set of Pareto efficient paths for physical and human capital accumulation, and find that there is a continuum of efficient growth rate-interest rate combinations. The preferred combination for an infinitely-lived planner will depend on the social discount rate. Competitive equilibrium with subsidized or mandated human capital accumulation may give rise to a Pareto efficient steady state, though for some parameters efficiency requires some intergenerational redistribution. We then argue that a social planner or government with an infinite horizon is incongruous in an OG model when the agents all have finite horizons. Hence the second part of the paper addresses the question of how a government whose decisionmakers reflect the finite horizons of their constituents would choose policies that affect physical and human capital accumulation. Specifically we assume that each government maximizes a weighted sum of utilities of those currently alive. Each period the government selects a policy that takes into account the effect (through state variables) on subsequent policy decisions (and hence on the welfare of the current young generation). Numerical methods involving polynomial approximations are used to compute equilibria under specific parametric assumptions. Equilibrium growth rates turn out to be substantially below efficient rates.
关键词: Education, Growth, Political economy, Political instability, and Markov equilibrium 学科: D72 - Analysis of collective decision-making - Models of political processes : Rent-seeking, elections, legislatures, and voting behavior, O41 - One, Two, and Multisector Growth Models, and D91 - Intertemporal choice and growth - Intertemporal consumer choice ; Life cycle models and saving