Heckman, James J; Honore, Bo E - In: Econometrica 58 (1990) 5, pp. 1121-49
This paper explores the robustness of the essential economic conclusions of the Roy model of self-selection and income inequality to relaxation of its normality assumptions. A log concave version of the model reproduces most of the main results. Log convex cases offer counterexamples. The...