This paper attempts to investigate the extent to which trade openness has had an impact on the levels of income and rates of growth in a sample of 115 developing countries for the period 1970–2009. Additionally, to assess whether there is an income level threshold for a country to benefit from international trade, the sample is broken down into three mutually exclusive groups of countries: low-income, lower middle-income, and upper middle-income countries. The main novelty of the paper lies on the use, on the one hand, of a new and better trade openness measure and, on the other hand, of non-stationary heterogeneous panel cointegration techniques to cope with the problem of cross-sectional dependence. The results show a positive bi-directional relationship between trade openness and income level in the long run, thus suggesting that trade openness is both a cause and a consequence of the level of income. The results for the short run, that is, the link between openness growth and economic growth, go in the same direction.

The Bhagwati hypothesis predicts a growth enhancing effects of trade (exports) and foreign direct investment (FDI) interaction. This paper tests the validity of the Bhagwati hypothesis by investigating the extent to which the interaction of trade (exports) and FDI has had an impact on economic growth for a sample of 45 African countries over the period 1990–2014. To do so, we estimate an augmented endogenous growth model with the aid of a dynamic system generalised method of moment (GMM) estimation technique, which adequately cope with potential endogeneity issues. The findings reveal support for the Bhagwati hypothesis and provide vital information for policy formulation aimed at promoting more credible export-promotion strategies and channelling of FDI into export-oriented sectors in long-term development strategies in African countries.

This paper investigates the long-run impact of foreign direct investment and trade openness on economic growth in Ghana (1970–2011) within the framework of the endogenous growth literature. Adopting the autoregressive distributed lag bounds testing approach to cointegration the results suggest that the interaction of foreign direct investment and exports has been crucial in fostering growth, thus validating the famous Bhagwati hypothesis. From a policy oriented point of view, the study recommends the channeling of foreign direct investment to export-oriented sectors and the promotion of export-led growth strategies in long-term development plans.

The paper empirically examines the extent to which different forms of capital flows (foreign direct investment [FDI], remittances, foreign aid and external debt) affect the impact of trade (exports) on economic growth in Africa. We do this with the aid of an augmented endogenous growth model which we estimate by dynamic system GMM technique with endogeneity-expunging efficiency. First, we find that whilst the direct impact of trade (exports) has been crucial in driving economic growth in Africa in both the short- and long-run, capital flows (FDI, remittances, foreign aid and external debt) do not. Second, our results clearly show that, in both the short- and long-run, inflows of FDI and remittances serve as important channels through which trade (exports) has its largest impact on economic growth while inflows of foreign aid and external debt do not. Following these outcomes, we conclude that policies aimed at attracting FDI and remittances to African countries are what policy reforms should target. Further, our findings suggest that moderating the inflow of external debt and foreign aid could be beneficial to the effect of trade (exports) on economic growth.