Exports, imports, and economic growth in Portugal: evidence from causality and cointegration analysis

This paper investigates the Granger-causality between exports, imports, and economic growth in Portugal over the period 1865–1998. The role of the import variable in the investigation of exports–output causality is emphasized, enabling one to test for the cases direct causality, indirect causality, and spurious causality between export growth and output growth. The empirical results do not confirm a unidirectional causality between the variables considered. There is a feedback effect between exports–output growth and imports–output growth. More interestingly, there is no kind of significant causality between import–export growth. Both results seem to support the conclusion that the growth of output for the Portuguese economy during that period revealed a shape associated with a small dual economy in which the intra-industry transactions were very limited.