This paper evaluates the performance of alternative estimation methods for multiplicative and log models with heteroskedasticity. Contrary to Santos Silva and Tenreyro (2006), the results of a simulation study indicate that the Pseudo Poisson Maximum Likelihood estimator (PPML) is not always the...

Latin American countries have lost competitiveness in world markets in comparison to China over the last two decades. The main purpose of this study is to examine the causes of this development. To this end an augmented Dornbusch-type Ricardianʺ model is estimated using panel data. The...

This paper investigates Turkey's sectoral trade flows to the EU based on panel data from the period 1988 to 2002. Turkey's sixteen most important export sectors are analysed. Emphasis is placed on the role of price competition, EU protection, and transport costs in the export trade between...