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Proceedings of 3rd Global Accounting, Finance and Economics Conference 5 - 7 May, 2013, Rydges Melbourne, Australia, ISBN: 978-1-922069-23-8 The Roots of Export Diversification Michael Jetter and Andres Ramirez Hassan Countries with diversified export baskets are said to enjoy various benefits, especially in the context of long run economic growth and development. This paper uses Bayesian Model Averaging to uncover the true long term determinants of export diversification among 42 potential factors, and thus 2^42 potential models. Our results suggest four significant factors in predicting export diversification levels: natural resource rents as a percentage of GDP (100 percent posterior inclusion probability in the true model) seems to lower diversification, whereas primary school enrollment (97 percent), population size (27 percent), and foreign direct investment (19 percent) raise diversification levels. Neither policy-related variables (e.g. tariffs, freedom from trade regulations or democracy) nor macroeconomic factors (such as trade openness, terms of trade or domestic investment levels) nor geographical remoteness (whether the country is an island or landlocked) seem to matter over the long run. Various robustness checks confirm our results. ____________________________________________________________________ Michael Jetter, Universidad EAFIT, Medellin, Colombia. Andres Ramirez Hassan, Universidad EAFIT, Medellin, Colombia.