D’Haultfoeuille, Xavier; Maurel, Arnaud - In: Econometric Theory 29 (2013) 01, pp. 213-224
It is often believed that without instruments, endogenous sample selection models are identified only if a covariate with a large support is available (see, e.g., Chamberlain, <xref>1986</xref>, <italic>Journal of Econometrics</italic> 32, 189–218; Lewbel, <xref>2007</xref>, <italic>Journal of Econometrics</italic>141, 777–806) . We propose a new...