Chesher, Andrew; Rosen, Adam - Centre for Microdata Methods and Practice (CEMMAP) - 2013
The ability to allow for flexible forms of unobserved heterogeneity is an essential ingredient in modern … unobserved heterogeneity to endogenous variables need not admit a unique inverse. The class of GIV models allows unobservables to … practical limitations on the role of unobserved heterogeneity. Important examples include models with discrete or mixed …