We analyze an agency model where one individual decides how much evidence he collects. We assume that he has free access to information, but all the news acquired become automatically public. Conditional on the information disclosed, a second individual with conflicting preferences undertakes an...

This paper studies nonstationarities in panels of exchange rates and interest rates. For this, we survey developments in the analysis of nonstationary panels with cross-sectional dependence modeled as a factor model. We focus on panel unit root tests and on inference on the nonstationary...

This paper studies qualitative properties of an optimal contract in a multi-agent setting in which agents are subject to a common shock. We derive a necessary and sufficient condition for the optimal reward of an agent producing an output level y to be a decreasing (increasing) function of the...

In this paper we examine the long-term impact of legalized abortion on teenage out-of-wedlock childbearing in the United States using the birth data from the Vital Statistics of the U. S. Our fundamental argument is analogous to Donahue and Levitt’s (2001): by decreasing the number of unwanted...

During the first half of the 20th century the workweek in the United States declined, and the distribution of hours across wage deciles narrowed. At the same time, the distribution of wages narrowed too. The hypothesis proposed is (i) Households have access to an increasing number of leisure...

In this paper we propose a nonparametric kernel-based model specification test that can be used when the regression model contains both discrete and continuous regressors. We employ discrete variable kernel functions and we smooth both the discrete and continuous regressors using least squares...

Contrary to the setpoint model of some psychologists, individual happiness does not tend to fluctuate around a constant level. Although the personality and genetic factors emphasized by setpoint theorists are important in explaining individual differences in happiness at a point in time, survey...

The asymptotic local power of various panel unit root tests are investigated. The (Gaussian) power envelope is obtained under homogeneous and heterogeneous alternatives. The envelope is compared with the asymptotic power functions for the pooled t- test, the Ploberger-Phillips (2002) test, and a...

This paper investigates a simple dynamic linear panel regression model with both fixed effects and time effects. Using "large n and large T " asymptotics, we approximate the distribution of the fixed effect estimator of the autoregressive parameter in the dynamic linear panel model and derive...

We consider a lag-augmented two- or three-stage least squares estimator for a structural dynamic model of nonstationary and possibly cointegrated variables without the prior knowledge of unit roots or rank of cointegration. We show that the conventional two- and three-stage least squares...