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Provedor de dados:  AgEcon
País:  United States
Título:  Elasticity of trade flow to trade barriers: A comparison among emerging estimation techniques
Autores:  Olper, Alessandro
Raimondi, Valentina
Data:  2008-10-14
Ano:  2002
Palavras-chave:  Gravity model
Trade Elasticity
Food trade
International Relations/Trade
Resumo:  The objective of this study has been to analyze the sensitivity of trade flow to trade barriers from gravity equations, using different econometric techniques recently highlighted in the literature. Specifically, we compare a benchmark OLS fixed effects specification a la Feenstra (2002), with three emerging estimation methods: the standard Heckman correction for selection bias, to account for zero trade flow; its extension, recently proposed by Helpman et al. (2008), to control for firm heterogeneity; and, finally, the Poisson pseudo-maximum-likelihood (PPML) technique to correct for the presence of heteroskedasticity, first proposed by Santos Silva and Tenreyro (2006). Our gravity model includes trade among 211 exporter and 104 importer countries, in 18 food industry sectors.
Tipo:  Conference Paper or Presentation
Idioma:  Inglês
Relação:  European Association of Agricultural Economists>2008 International Congress, August 26-29, 2008, Ghent, Belgium
Formato:  6

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