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Title: Publication and Identification Biases in Measuring the Intertemporal Substitution of Labor Supply

Author(s): M. Ali Elminejad, Tomas Havranek and Roman Horvath

Publication Date: April 2021

Keyword(s): Bayesian model averaging, extensive margin, Frisch elasticity, Labor Supply, meta-analysis and Publication bias

Programme Area(s): Labour Economics

Abstract: The intertemporal substitution (Frisch) elasticity of labor supply governs the predictions of real business cycle models and models of taxation. We show that, for the extensive margin elasticity, two biases conspire to systematically produce large positive estimates when the elasticity is in fact zero. Among 723 estimates in 36 studies, the mean reported elasticity is 0.5. One half of that number is due to publication bias: larger estimates are reported preferentially. The other half is due to identification bias: studies with less exogenous time variation in wages report larger elasticities. Net of the biases, the literature implies a zero mean elasticity and, with 95% confidence, is inconsistent with calibrations above 0.25. To derive these results we collect 23 variables that reflect the context in which the elasticity was obtained, use nonlinear techniques to correct for publication bias, and employ Bayesian and frequentist model averaging to address model uncertainty.

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Bibliographic Reference

Elminejad, M, Havranek, T and Horvath, R. 2021. 'Publication and Identification Biases in Measuring the Intertemporal Substitution of Labor Supply'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=16032