People across the developing world join rotational savings and credit associations (roscas) to fund repeated purchases of nondivisible goods. When the scope for punishment is weak, there is a natural question about why agents do not defect from these groups. I model a rosca as a commitment...

I study the provision of commitment savings by informal banks to sophisticated hyperbolic discounters. Since a consumer is subject to temptation in the period that he signs a contract, banks might exploit his desire for instant gratification even as they help him to commit for the future....

The contribution of this paper is twofold. First, a thorough presentation of the state of the art of the New Keynesian Macroeconomic model is provided. A discussion of its empirical caveats follows and some recent extensions of the standard model are evaluated in more detail. Second, a key...

We extend the classic Merton (1969, 1971) problem that investigates the joint consumption-savings and portfolio-selection problem under capital risk by assuming sophisticated but time-inconsistent agents. We introduce stochastic hyperbolic preferences as in Harris and Laibson (2013) and find...

We propose a solution concept for games that are played among hyperbolic discounters that are possibly naive about their own, or about their opponent's future time inconsistency. Our perception-perfect equilibrium essentially requires each player to take an action consistent with the subgame...

We analyze the implication of time-inconsistent preferences in educational decision making and corresponding policies using a structural dynamic choice model. Based on a novel identification approach, we exploit variation in average years invested in degree attainment through various educational...

We analyze the implication of time-inconsistent preferences in educational decision making and corresponding policies using a structural dynamic choice model. Based on a novel identification approach, we exploit variation in average years invested in degree attainment through various educational...

This paper constructs a structural retirement model with hyperbolic preferences and uses it to estimate the effect of several potential Social Security policy changes. Estimated effects of policies are compared using two models, one with hyperbolic preferences and one with standard exponential...

We revisit the role of social security in countering inadequate saving for retirement. We compute the optimal social security tax rate for households who lack the computational ability to solve dynamic optimization problems. Instead, they follow the simple rule of thumb of consuming and saving a...

In this paper we propose a new strategy for comparing the behavior of a hyperbolic discounter who possesses self-control problems to an exponential discounter who does not. Our strategy controls for inherent differences in overall levels of impatience across discount functions, which thereby...