Heckman, James J.; Ichimura, Hidehiko; Smith, Jeffrey A.; … - 2021
This paper develops and applies semiparametric econometric methods to estimate the form of selection bias that arises … econometric selection model which represents the bias solely as a function of the probability of participation; and (c) the method … method but find evidence in support of the index-sufficient selection bias model and the assumptions that justify application …