Immigration Economics synthesizes the theories, models, and econometric methods used to identify the causes and consequences of international labor flows. Economist George Borjas lays out with clarity and rigor a full spectrum of topics, including migrant worker selection and assimilation, the...

"Empirical exercises in economics frequently involve estimation of highly nonlinear models. The criterion function may not be globally concave or convex and exhibit many local extrema. Choosing among these local extrema is non-trivial for a variety of reasons. In this paper, we analyze the...