Trade, investment, and growth
1998
Krishna, Kala | Ozyildirim, Ataman | Swanson, Norman R. (Norman Rasmus)
This paper looks at the patterns of causation between income, export, import, and investment growth for 25 developing countries. Our approach differs from previous efforts in a number of ways. First, we examine each country individually in order to allow for complete heterogeneity and properly account for the stochastic trending properties of the data. Second, we apply novel model selection techniques which are based on in-sample goodness-of-fit criteria and ex-ante predictive ability criteria to identify the best model for each country. Finally, we propose a rather novel device based on simple contingency tables which allows us to assess whether our models are capable of accurately predicting turning points in GDP growth. We find that countries with high trade exposure fare poorly in this dimension and posit that the GDP growth in such countries is best modeled using an index of global business cycle conditions, in addition to the above variables. Overall, we find that in around two thirds of the countries examined, growth is best explained by exports and/or imports. Further, and in contrast to previous findings of bi-directional causality, around 70% of the countries exhibit uni-directional causality.
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