We analyze the empirical content of the Roy model, stripped down to its essential features, namely sector specific unobserved heterogeneity and self-selection on the basis of potential outcomes. We characterize sharp bounds on the joint distribution of potential outcomes and testable...

We provide a test for the specification of a structural model without identifying assumptions. From the dual formulation of a null hypothesis of compatibility of the data generating process with the structure, we derive a Kolmogorov-Smirnov statistic for Choquet capacity functionals, which we...

We propose an easily implementable test of the validity of a set of theoretical restrictions on the relationship between economic variables, which do not necessarily identify the data generating process. The restrictions can be derived from any model of interactions, allowing censoring and...