Why is the price of renting an automobile "flat" as a function of its age or odometer value? Specifically, why is it that car rental companies do not offer customers the option of renting older cars at a discount, instead of offering only relatively new cars at full price? We also tackle a...

This essay reviews Kenneth I. Wolpin's (2013) monograph The Limits of Inference without Theory, which arose from lectures he presented at the Cowles Foundation in 2010 in honor of Tjalling Koopmans. While I readily agree with Wolpin's basic premise that empirical work that eschews the role of...

We revisit the comparison of mathematical programming with equilibrium constraints (MPEC) and nested fixed point (NFXP) algorithms for estimating structural dynamic models by Su and Judd (SJ, 2012). They used an inefficient version of the nested fixed point algorithm that relies on successive...

The authors present an empirical model of optimal operation of nuclear power plants. The optimal lifetime is the solution to an optimal stopping problem: the plant is closed when the expected discounted losses from continued operation exceed the discounted costs of decommissioning. The authors...

This paper estimates the expectations of older male workers in the form of a 130 million element Markov transition probability matrix specifying the joint stochastic process for workers’ income, health, martial and employment status, conditioned on workers’ decisions about labor force...

A comment on the article by Peter C. B. Phillips in this volume. Copyright 2005 American Journal of Economics and Sociology, Inc..