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IFAU - Institute for Evaluation of Labour Market and Education Policy Working Paper Series
IFAU - Institute for Evaluation of Labour Market and Education Policy

No 2003:4:
Using matching, instrumental variables and control functions to estimate economic choice models

James Heckman and Salvador Navarro-Lozano ()

Abstract: This paper investigates four topics. (1) It examines the different roles played by the propensity score (probabilitiy of selection) in matching, instrumental variable and control functions methods. (2) It contrasts the roles of exclusion restrictions in matching and selection models. (3) It characterizes the sensivity of matching to the choice of conditioning variables and demonstrates the greater robustness of control function methods to misspecification of the conditioning variables. (4) It demonstrates the problem of choosing the conditioning variables in matching and the failure of conventional model selection criteria when candidate conditioning variables are not exogenous.

Keywords: Propensity score; matching; selection models; (follow links to similar papers)

JEL-Codes: C31; (follow links to similar papers)

46 pages, January 16, 2003

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This paper is published as:
Heckman, James and Salvador Navarro-Lozano, (2004), 'Using matching, instrumental variables and control functions to estimate economic choice models', Review of Economics and Statistics, Vol. 86, No. 1, pages 30-57



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