Florens, J. P.; Heckman, J. J.; Meghir, C.; Vytlacil, E. - In: Econometrica 76 (2008) 5, pp. 1191-1206
We use the control function approach to identify the average treatment effect and the effect of treatment on the treated in models with a continuous endogenous regressor whose impact is heterogeneous. We assume a stochastic polynomial restriction on the form of the heterogeneity, but unlike...