Trade Policy and Economic Growth in Nigeria


  • Mutiu Adeniyi Afolabi Federal Polytechnic Offa


Trade Policy; Economic Growth; ARDL; IRF


This study examines the effect of trade policy on Nigeria economic growth and used annual
data that spanned from 1983 to 2018. The Augmented Dickey-Fuller test revealed that the variables
employed have mixed order of integration (i(0),i(1)). Thereafter, An Autoregressive Distributed Lag
(ARDL) technique was employed because it suits the outcome of the pre estimation test. A cointegration
test among the variables is conducted using the ARDL bound test technique. The ARDL estimates show
that adjusted trade ratio impacted positively on GDP both in the short and long run and price based
variables impacted positively on GDP both in the short and long run. We computed impulse response
function for the estimated ARDL model to confirm the accuracy of Bound testing result. Interestingly,
the finding remained robust when the potential effect of the trade policy is accounted for using IRF.
The IRF show dynamically that GDP responded positively to trade policy at a higher horizon contrary
to the short run estimate thereby given more credibility to the result of the ARDL which was been
transformed to IRF. The dynamic responses allow us to find out that GDP responded positively and
negatively to trade policy but the accumulated (long run) effect is positive. The study conclude that
adjusted trade ratio is procyclical while price based mechanism is countercyclical in Nigeria during the
scope of study. The study suggests that the policy makers should adopt policies that can promote
innovations and shut out any form of black market premium that can cause distortions.


Ajayi, E. O. & Araoye, F. E (2019). Trade Openness and Economic Growth in Nigeria. International

Journal of Economics and Financial Management, 4(2), pp. 2545-5966.

Akmal, M. S.; Ahmad, Q. M.; Hussian, M. &Muhammed, S. B. (2007). An empirical investigation of

the relationship between trade liberalization and poverty reduction: A Case for Pakistan. The Lahore

Journal of Economics, 5(5): pp. 99-118.

Anderson, L. & Babula, R. (2008). The link between openness and long-run economic growth.United

States trade commission journal of international commerce an economics, 6(8), pp. 1-20.

Ayorinde, F. & Olayinka, O. (2012). Trade liberalization and technology acquisition in the

manufacturing sector: Evidence from Nigeria. AERC Research Paper, No. 117, August.

Baldwin, R. E. (2002). Openness and growth: what’s the empirical relationship? National Bureau of

Economic Research (NBER), University of Chicago Press, Chicago.

Brafu-Insaidoo, W. G. &Obeng, C. K. (2012). Import liberalization and import tariff yield in Ghana:

Estimating tariff buoyancy and elasticity. American Journal of Economics, 2(2), pp. 20-25.

Briggs, I. N. (2007). Nigerian mainstream trade policy into national development strategies. ATPC work

in progress: Economic Commission for Africa, UNDP, No 52.

Chaudhry, I. S.; Malik, A. &Faridi, M. Z. (2010). Exploring thecausalityrelationship between trade

liberalization, human capital and economic growth:Empiricalevidence from Pakistan. Journal of

Economics and International Finance, 2(8), pp. 175-182.

Dimitrious, A & Stephen, G.H. (2007). Applied Econometrics: A Modern Approach Using Eviews and

Microfit, Revised Edition First Edition.

Dowrick, S. & Jane, G. (2004). Trade openness and growth: Who benefits? Oxford Review of Economic

Policy, 20(1), pp. 38–56.

Echekoba, F.N.; Okonkwo, V. I., & Adigwe, P.K. (2015).Trade liberalization and economic growth: The

Nigerian experience (1971-2012). Journal of poverty, investment and development, 14, pp. 51-72.

Edmond, C.; Midrigan, V. & Yi Xu, D. (2015).Competition, mark-ups, and the gains from international

trade. American Economic Review, 105(10), pp. 3183-3221.

Edwards S. (1998). Openness, productivity and growth: What do we really know? Economic Journal,

Blackwell Publishing for the Royal Economic Society, 108 (447), pp. 383-398.

Ehinomen, C. &Dasilva, D. (2014).Impact of trade openness on the output growth in the Nigerian

economy. British Journal of Economics, Management & Trade, 4(5), pp. 755-768.

Elijah, S. & Musa, A. B. (2019).Dynamic Impact of Trade Openness on the Economic Growth in

Nigeria.International. Journal of Engineering and Advanced Technology (IJEAT), 8(5): pp. 609-616.

Ezeuchenne, K. (2017). International Trade and Economic Growth in Nigeria. IOSR Journal of

Humanities and Social Science 22(6): pp. 33-43.

Ferrantino, B.; Michae, A.; Babula, R. &Ingersolll, D. (1997). The dynamic effects of trade

liberalization: An empirical analysis. Washington, DC 20436: United States International Trade

Commission, Publication 3069.

Fiestas, I. (2005). The effects of trade liberalization on growth, poverty and inequality. CILAE


Githanga, B.W. (2015). Trade liberalization and economic growth in Kenya. An empirical Investigation

(1975-2013). Department of Economics, Soderton University, Kenya.

Grossman, G. &Helpman. E. (1991). Innovation and growth in the world economy. Cambridge:







Economic Development, Technological Change, and Growth