Hyperbolic discounting is not observationally equivalent to exponential discounting. It is always possible to calibrate an exponential model so that it predicts the same level of consumption as a hyperbolic model. However, the two models have radically different comparative statics.

In this paper, we study the optimal choices of the federal income tax, federal transfers, and local taxes in a dynamic model of capital accumulation and with explicit game structures among private agents, the local government and the federal government. When the federal government is the leader...

In this paper, we consider social status, the spirit of capitalism, fiscal policies, and asset pricing in a stochastic model of growth. With specific assumptions on the production technology, preferences, and stochastic shocks, we derive the explicit solutions to the growth rates of consumption...

In this paper, we study the optimal choices of the federal income tax, federal transfers, and local taxes in a dynamic model of capital accumulation and with explicit gamestructure s among multipleprivateage nts, multiplelocal governments, and the federal government. In general, the optimal...

This paper presents an infinite-horizon model of optimal capital accumulation with the social-status concern and the cash-in-advance constraint. When the cash-in-advance constraint applies to both consumption and investment, money is not supemeutral. If only consumption is subject to the...

This paper presents a group of models showing the strikingly different implications of foreign aid to the private sector and public sector. In the first model, with decentralized decision-making and without optimal choices of fiscal policies on behalf of the government, foreign aid to the...

This paper extends Matsuyama's (2006) 0-1 endogenous-retirement choice in the second period to a framework with a continuous-endogenous-retirement choice to study consumption-saving decision and capital accumulation in an overlapping-generations model. The existence of the steady state is shown,...

In this paper, we consider a finite-horizon model with the time-additive utility and the time varying discount rate. With the assumption of the concavity of absolute risk tolerance, the concavity of the consumption function has been proved. This result significantly broadens the conclusion of...

This paper examines the effects of government debt and deficit, income tax, and public investment on economy in a endogenous growth model with finite-horizon, the spirit of capitalism, and government expenditure. It shows that with the increasing of the spirit of capitalism and life horizon (the...