Tightening bounds in triangular systems

Desire Kedagni and Ismael Mourifié ()

Economics Letters, 2014, vol. 125, issue 3, 455-458

Abstract: This note discusses partial identification in a nonparametric triangular system with discrete endogenous regressors and nonseparable errors. Recently, Jun et al. (2011, JPX) provide bounds on the structural function evaluated at particular values using exclusion, exogeneity and rank conditions. We propose a simple idea that often allows to improve the JPX bounds without invoking a new set of assumptions. Moreover, we show how our idea can be used to tighten existing bounds on the structural function in more general triangular systems.

Keywords: Nonparametric triangular systems; Partial identification; Instrumental variables; Rank conditions (search for similar items in EconPapers)
JEL-codes: C14 C30 C31 (search for similar items in EconPapers)
Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecolet:v:125:y:2014:i:3:p:455-458

DOI: 10.1016/j.econlet.2014.10.019

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