A generalized spatial error components model for gravity equations

Peter Egger and Michael Pfaffermayr

Empirical Economics, 2016, vol. 50, issue 1, 177-195

Abstract: Since the publication of the paper by Anderson and van Wincoop (J Econ Litt 42:691–751, 2004 ), the estimation of gravity models has turned increasingly structural. The benefit of this development is that empirical models which are based on few parameters explain data on bilateral trade flows relatively well, while being consistent with general equilibrium. The latter permits using the estimated parameters for comparative static analysis. In general, in the cross section such models involve country-pair-specific variables and exporter-specific as well as importer-specific variables. The latter are determined through structural model constraints. The disturbances on this model are typically assumed to be independently if not also identically distributed. This paper illustrates that the assumption of independently distributed disturbances is likely flawed in practice. Ignoring such independence leads to inconsistent test statistics and standard errors of the parameters. We present a structural gravity model which permits the disturbances to be cross-sectionally interdependent in up to three dimensions and illustrate the consequences of doing so for inference. Copyright Springer-Verlag Berlin Heidelberg 2016

Keywords: Bilateral trade flows; Gravity equation; Spatial random effects; C31; C33; F12; F17 (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (7)

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DOI: 10.1007/s00181-015-0980-5

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