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Prehn, Sören
Brümmer, Bernhard
Glauben, Thomas
Year of Publication: 
Series/Report no.: 
Diskussionspapiere, Department für Agrarökonomie und Rurale Entwicklung 1209
Recently, discussion about the appropriate estimation of gravity trade models has started in agriculture. Here, we are going to review recent developments in the literature. It appears that fixed effects Poisson Pseudo Maximum Likelihood is not only the only consistent estimator [Santos Silva and Tenreyro, 2006] but also it already allows for a structural fit [Fally, 2012]. Fixed effects in conjunction with the adding-up property of Poisson Pseudo Maximum Likelihood - which has been so far neglegted - can be harnessed to directly deduce multilateral resistance indexes (i.e. general equilibrium effects) from reduced-form estimation. This innovation made by Fally will ease comparative statics and incidence analysis, making Poisson Pseudo Maximum Likelihood even more preferable in practice.
Gravity Estimation
Poisson Pseudo Maximum Likelihood
Structural Fit
Document Type: 
Working Paper

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