In this paper, I present a simple characterization of the sample selection bias problem that is also applicable to the … problem of sample selection bias is fit within the conventional specification error framework of Griliches and Theil. A simple … estimator is discussed that enables analysts to utilize ordinary regression methods to estimate models free of selection bias …

immigrant high school dropouts. One data source -- the CPS -- is plagued by non-response and allocation bias from the hot …-deck procedure that biases upward the estimated return to the GED. Correcting for allocation bias and ability bias, there is no …