Many economic decisions can be described as an option exercise or optimal stopping problem under uncertainty. Motivated by experimental evidence such as the Ellsberg Paradox, we follow Knight (1921) and distinguish risk from uncertainty. To afford this distinction, we adopt the multiple-priors...

Fixed e®ects estimates of structural parameters in nonlinear panel models can be severely biased due to the incidental parameters problem. In this paper I show that the most important com- ponent of this incidental parameters bias for probit ¯xed e®ects estimators of index coe±cients is...

Divorce rates in the U.S. have been falling for the past decade, while female labor force participation rates have been rising. Aggregate data for US states show that in 2000, divorce rates across states are negatively correlated with female labor force participation rates, even after...

This paper proposes a new instrumental variables estimator for a dynamic panel model with .xed e¤ects with good bias and mean squared error properties even when identi.cation of the model becomes weak near the unit circle. We adopt a weak instrument asymptotic approximation to study the...

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America's aging coupled with high and growing old age health and pension benefits augers for much higher payroll taxes, with damaging effects on the U.S. economy. This prognosis is supported by our analysis of a detailed dynamic life-cycle general equilibrium model. The FairTax, which proposes...

Should the law restrict liability of defaulting borrowers? We abstract from possible benefits arising from limited rationality or risk-aversion of borrowers, contractual incompleteness, or lender moral hazard. We focus instead on general equilibrium implications of liability rules with moral...

Until the early decades of the 20th century, women spent more than 60% of their prime- age years either pregnant or nursing. Since then, improved medical knowledge and obstetric practices reduced the time cost associated with women?s reproductive role. The introduction of infant formula also...

There is substantial international variation in gender pay gaps, from 25-30% in the US and the UK, to 10-20% in a number of central and northern EU countries, down to an average of 10% in southern EU. We argue that non-random selection of women into work across countries may explain part of such...