This paper considers the problem of making inferences about the effects of a program on multiple outcomes when the assignment of treatment status is imperfectly randomized. By imperfect randomization we mean that treatment status is reassigned after an initial randomization on the basis of...

This paper develops methods for evaluating marginal policy changes. We characterize how the effects of marginal policy changes depend on the direction of the policy change, and show that marginal policy effects are fundamentally easier to identify and to estimate than conventional treatment...

This paper studies the identification and estimation of preferences and technologies in equilibrium hedonic models. In it, we identify nonparametric structural relationships with nonadditive heterogeneity. We determine what features of hedonic models can be identified from equilibrium...

Production of commodities based on open-access renewable natural resources (NR) has usually been examined under "low" congestion (LC) - where MC AC and both increase with output. I identify two additional congestion categories, "high" (HC) and "super" (SC) congestion - where AC is...

Brain drain BD, human capital h, and inequality's institutional impact is examined in a model where a rent-seeking elite taxes residents and voicing affects the likelihood of regime change. We find that BD and h's impact on institutional quality (Q) are as follows: i) Q is a U-shaped function of...

This paper summarizes our recent research on evaluating the distributional consequences of social programs. This research advances the economic policy evaluation literature beyond estimating assorted mean impacts to estimate distributions of outcomes generated by different policies and determine...