Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/36201
Authors: 
d'Haultfoeuille, Xavier
Maurel, Arnaud
Year of Publication: 
2009
Series/Report no.: 
IZA Discussion Papers 4334
Abstract: 
It is often believed that without instrument, endogenous sample selection models are identified only if a covariate with a large support is available (see Chamberlain, 1986, and Lewbel, 2007). We propose a new identification strategy mainly based on the condition that the selection variable becomes independent of the covariates when the outcome, not one of the covariates, tends to infinity. No large support on the covariates is required. Moreover, we prove that this condition is testable. We finally show that our strategy can also be applied to the identification of generalized Roy models.
Subjects: 
Identification at infinity
sample selection model
Roy model
JEL: 
C21
Persistent Identifier of the first edition: 
Document Type: 
Working Paper

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