This study examines the Granger-causal relationship between private investment and economic growth, accounting for cross-sectional dependencies in a panel of SADC countries from 1990 to 2022. Using disaggregated data and advanced panel econometric methods, including quantile causality tests, we find evidence of bidirectional causality among growth, private investment, foreign direct investment, and domestic credit. However, this relationship is heterogeneous and varies across the conditional distribution of growth. Sensitivity analyses confirm that the results are robust but contingent on institutional factors such as governance and the level of development. The findings suggest that policymakers should adopt integrated strategies that combine investment promotion with institutional and financial development to maximize growth benefits.
References
[1]
Acemoglu, D., Johnson, S., & Robinson, J. A. (2001). The Colonial Origins of Comparative Development: An Empirical Investigation. American Economic Review, 91, 1369-1401. https://doi.org/10.1257/aer.91.5.1369
[2]
Afonso, A., & St. Aubyn, M. (2019). Economic Growth, Public, and Private Investment Returns in 17 OECD Economies. Portuguese Economic Journal, 18, 47-65. https://doi.org/10.1007/s10258-018-0143-7
[3]
Agénor, P., & Neanidis, K. C. (2015). Innovation, Public Capital, and Growth. Journal of Macroeconomics, 44, 252-275. https://doi.org/10.1016/j.jmacro.2015.03.003
[4]
Alfaro, L., Chanda, A., Kalemli-Ozcan, S., & Sayek, S. (2004). FDI and Economic Growth: The Role of Local Financial Markets. Journal of International Economics, 64, 89-112. https://doi.org/10.1016/s0022-1996(03)00081-3
[5]
Ari, I., Akkas, E., Asutay, M., & Koç, M. (2019). Public and Private Investment in the Hydrocarbon-Based Rentier Economies: A Case Study for the GCC Countries. Resources Policy, 62, 165-175. https://doi.org/10.1016/j.resourpol.2019.03.016
[6]
Aschauer, D. A. (1989a). Does Public Capital Crowd out Private Capital? Journal of Monetary Economics, 24, 171-188. https://doi.org/10.1016/0304-3932(89)90002-0
[7]
Aschauer, D. A. (1989b). Is Public Expenditure Productive? Journal of Monetary Economics, 23, 177-200. https://doi.org/10.1016/0304-3932(89)90047-0
[8]
Asiedu, E. (2002). On the Determinants of Foreign Direct Investment to Developing Countries: Is Africa Different? World Development, 30, 107-119. https://doi.org/10.1016/s0305-750x(01)00100-0
[9]
Bahal, G., Raissi, M., & Tulin, V. (2018). Crowding-Out or Crowding-In? Public and Private Investment in India. World Development, 109, 323-333. https://doi.org/10.1016/j.worlddev.2018.05.004
[10]
Baltagi, B. H., & Moscone, F. (2010). Health Care Expenditure and Income in the OECD Reconsidered: Evidence from Panel Data. Economic Modelling, 27, 804-811. https://doi.org/10.1016/j.econmod.2009.12.001
[11]
Banerjee, A., Dolado, J., & Mestre, R. (1998). Error-Correction Mechanism Tests for Cointegration in a Single-Equation Framework. Journal of Time Series Analysis, 19, 267-283. https://doi.org/10.1111/1467-9892.00091
[12]
Ben Addallah, H., & Meddeb, M. (2001). Croissance économique, investissement privé et ouverture commerciale: Le cas de la Tunisie. Revue Région et Développement, 13, 151-170.
[13]
Berg, A., Buffie, E. F., Pattillo, C., Portillo, R., Presbitero, A. F., & Zanna, L. (2019). Some Misconceptions about Public Investment Efficiency and Growth. Economica, 86, 409-430. https://doi.org/10.1111/ecca.12275
[14]
Borensztein, E., De Gregorio, J., & Lee, J. (1998). How Does Foreign Direct Investment Affect Economic Growth? Journal of International Economics, 45, 115-135. https://doi.org/10.1016/s0022-1996(97)00033-0
[15]
Buiter, W. H. (1977). “Crowding out” and the Effectiveness of Fiscal Policy. Journal of Public Economics, 7, 309-328. https://doi.org/10.1016/0047-2727(77)90052-4
[16]
Cavallo, E., & Daude, C. (2011). Public Investment in Developing Countries: A Blessing or a Curse? Journal of Comparative Economics, 39, 65-81. https://doi.org/10.1016/j.jce.2010.10.001
[17]
Dawson, J. W. (1998). Institutions, Investment, and Growth: New Cross-Country and Panel Data Evidence. Economic Inquiry, 36, 603-619. https://doi.org/10.1111/j.1465-7295.1998.tb01739.x
[18]
Dezeure, R., Bühlmann, P., Meier, L., & Meinshausen, N. (2015). High-Dimensional Inference: Confidence Intervals, p-Values and R-Software HDI. Statistical Science, 30, 533-558. https://doi.org/10.1214/15-sts527
[19]
Dumitrescu, E., & Hurlin, C. (2012). Testing for Granger Non-Causality in Heterogeneous Panels. Economic Modelling, 29, 1450-1460. https://doi.org/10.1016/j.econmod.2012.02.014
[20]
Dunning, J. H. (1993). Multinational Enterprises and the Global Economy. Addison-Wesley Publishing Company.
[21]
Durham, J. B. (2004). Absorptive Capacity and the Effects of Foreign Direct Investment and Equity Foreign Portfolio Investment on Economic Growth. European Economic Review, 48, 285-306. https://doi.org/10.1016/s0014-2921(02)00264-7
[22]
Erden, L., & Holcombe, R. G. (2005). The Effects of Public Investment on Private Investment in Developing Economies. Public Finance Review, 33, 575-602. https://doi.org/10.1177/1091142105277627
[23]
Erenburg, S. J. (1993). The Relationship between Public and Private Investment. The Jerome Levy Economics Institute.
[24]
Erenburg, S. J., & Wohar, M. E. (1995). Public and Private Investment: Are There Causal Linkages? Journal of Macroeconomics, 17, 1-30. https://doi.org/10.1016/0164-0704(95)80001-8
[25]
Frees, E. W. (1995). Assessing Cross-Sectional Correlation in Panel Data. Journal of Econometrics, 69, 393-414. https://doi.org/10.1016/0304-4076(94)01658-m
[26]
Greene, J., & Villanueva, D. (1991). Private Investment in Developing Countries: An Empirical Analysis. Staff Papers—International Monetary Fund, 38, 33-58. https://doi.org/10.2307/3867034
[27]
H. Kelejian, H., & Prucha, I. R. (2001). On the Asymptotic Distribution of the Moran I Test Statistic with Applications. Journal of Econometrics, 104, 219-257. https://doi.org/10.1016/s0304-4076(01)00064-1
[28]
Khan, M. S., & Reinhart, C. M. (1990). Private Investment and Economic Growth in Developing Countries. World Development, 18, 19-27. https://doi.org/10.1016/0305-750x(90)90100-c
[29]
Levine, R., & Zervos, S. (1998). Stock Markets, Banks, and Economic Growth. American Economic Review, 88, 537-558.
[30]
Levine, R., Loayza, N., & Beck, T. (2000). Financial Intermediation and Growth: Causality and Causes. Journal of Monetary Economics, 46, 31-77. https://doi.org/10.1016/s0304-3932(00)00017-9
[31]
Lucas, R. E. (1988). On the Mechanics of Economic Development. Journal of Monetary Economics, 22, 3-42. https://doi.org/10.1016/0304-3932(88)90168-7
[32]
Meinshausen, N., Meier, L., & Bühlmann, P. (2009). p-Values for High-Dimensional Regression. Journal of the American Statistical Association, 104, 1671-1681. https://doi.org/10.1198/jasa.2009.tm08647
[33]
Munnell, A. H. (1990). Why Has Productivity Growth Declined? Productivity and Public Investment. New England Economic Review, Federal Reserve Bank of Boston, January, 3-22.
[34]
Newey, W. K., & West, K. D. (1994). Automatic Lag Selection in Covariance Matrix Estimation. The Review of Economic Studies, 61, 631-653. https://doi.org/10.2307/2297912
[35]
OCDE (2005). Mesurer la mondialisation: Les indicateurs de l’OCDE sur la mondialisation économique. Éditions OCDE.
[36]
Pesaran, M. H. (2004). General Diagnostic Tests for Cross Section Dependence in Panels. CE-Sifo Working Paper, No. 1229.
[37]
Pesaran, M. H. (2007). A Simple Panel Unit Root Test in the Presence of Cross-Section Dependence. Journal of Applied Econometrics, 22, 265-312. https://doi.org/10.1002/jae.951
[38]
Romer, P. M. (1998). Increasing Returns and Long-Run Growth. Journal of Political Economy, 94, 1002-1037. https://doi.org/10.1086/261420
[39]
Sokal, R. R., & Rohlf, F. J. (1995). Biometry: The Principles and Practice of Statistics in Biological Research (3rd ed.). W.H. Freeman and Co.
[40]
Voss, G. M. (2002). Public and Private Investment in the United States and Canada. Economic Modelling, 19, 641-664. https://doi.org/10.1016/s0264-9993(00)00074-2
[41]
Westerlund, J. (2007). Testing for Error Correction in Panel Data. Oxford Bulletin of Economics and Statistics, 69, 709-748. https://doi.org/10.1111/j.1468-0084.2007.00477.x
