Abstract The study investigated the role of international trade in economic performance in Tanzania for the post reform period, from 1980 to 2018. International trade is measured by disaggregated imports and exports while economic performance is measured by GDP growth. Exports are disaggregated into manufactured goods and non-manufactured goods while imports are disaggregated into capital goods and intermediate goods. To obtain robust non-spurious regression results, Dickey-Fuller (D-F) and Phillips-Peron (PP) Unit Root tests were performed. Johansen Co-integration tests were employed to investigate long-run relationships between export, imports and economic growth. The Johansen test suggested a long-run relationship between international trade and its components and economic development. In addition, the Error Correction Model (ECM) results further supported a long-run relationship between international trade and economic growth in Tanzania. This calls for further opening of the economy and further liberalisation of trade restrictions.
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