Does Government Size Moderate Finance- Growth Nexus in Sub-Saharan Africa?

Öz

We ask how government size impacts the relationship between financial development and economic growth for Sub-Saharan African countries during 1980-2014 period. The empirical strategy relies on panel data techniques of panel smooth transition regression (PSTR) and dynamic GMM approaches to test for non-linearities in finance-growth nexus and endogenously model the non-linearity to depend on government size. Preliminary results from the dynamic panel model show that finance-growth nexus is non-linear. Upon delving further into the non-linearities, our results show that financial development impacts economic growth positively only beyond a necessary threshold level of government expenditure share of 12 percent of GDP. Given the large informal sector and the pervasive market failures in Sub-Saharan African economies, governments need a minimum threshold level of expenditure to “correct” the credit markets and “formalize” the large informal financial sector. Therefore, Sub-Saharan African countries should not shy away from government expenditures that are meant to “correct” market failures in the financial sector or “formalize” the large informal financial sector to make finance work for economic growth.

Anahtar Kelimeler

• Financial Development
• Growth
• non-linearity
• Government Size
• PSTR
• System GMM
• Sub-Saharan Africa

Sahra-Altı Afrikada Kamu Sektörünün Büyüklüğü Finans-Büyüme İlişkinde Etkili Mi?

Öz

Bu çalışmada, Sahra-altı Afrika ülkelerinde kamu sektörünün büyüklüğünün finansal gelişmişlik ve ekonomik büyüme ilişkisini nasıl etkilediği analiz edilmektedir. Finansal gelişmişlik-ekonomik büyüme ilişkisinin doğrusallığı ve kamu sektörü büyüklüğünün bu ilişkideki rolü PSTR yöntemi ve dinamik panel GMM yöntemleri kullanılarak 1980-2014 dönemini için incelenmiştir. Sonuçlar finansal gelişmişlik-ekonomik büyüme ilişkisinin doğrusal olmadığını ve kamu sektörünün büyüklüğünün GSYH’ye oranının yüzde 12 eşik değerinden yüksek olduğu durumlarda finansal gelişmişliğin ekonomik büyüme üzerinde pozitif bir etkiye sahip olduğunu göstermektedir. Sahra-altı Afrika ülkelerinde yüksek kayıtdışılık ve yaygın piyasa aksaklıkları bulunmaktadır. Kredi piyasasındaki aksaklıkların giderilmesi ve kayıtdışılık oranın yüksek olduğu finansal sektörün kayıt altına alınabilmesi için asgari bir düzeyde kamu harcamasına ihtiyaç vardır. Dolayısıyla, finansal sektörün ekonomik büyümeyi destekler bir mahiyete kavuşabilmesi için Sahra-altı Afrika ülkelerinde kamu, piyasa aksaklıklarını düzeltici ve kayıtdışılığı azaltıcı harcama yapmaktan çekinmemelidir.

Anahtar Kelimeler

• Finansal Gelişmişlik
• Doğrusal Olmayan
• Kamu Sektörünün Büyüklüğü
• PSTR
• Sistem GMM
• Sahra-altı Afrika

Kaynakça

1. Aghion, P., Angeletos, M., Banerjee, A., Manova, K. (2004). “Volatility and growth: The role of financial development”. Mimeo. Department of Economics, Harvard University Arellano, M. and O. Bover, (1995), “Another Look at the Instrumental-Variable Estimation of Error-Components Models,” Journal of Econometrics, 68, 29-51.
2. Arellano, M. and S. Bond (1991), “Some tests of specification for panel data: Monte Carlo evidence and an application to employment equations”, Review of Economic Studies 58(2), 277-97.
3. Bangake, C. and J. C. Eggoh (2011) ‘Further Evidence on Finance-Growth Causality: A Panel Data Analysis’, Economic Systems, 35: 176–188.
4. Beck, T., Levine, R., Loayza, N. (2000) “Finance and the sources of growth”. Journal of Financial Economics 58, 261–300.
5. Berthelemy, J-C., and A. Varoudakis (1996) “Economic Growth, Convergence Clubs and the Role of Financial Development,” Oxford Economic Papers, 48, 70-84.
6. Blundell, R. and S. Bond, (1998), “Initial Conditions and Moment Restrictions in Dynamic Panel Data Models,” Journal of Econometrics, 87, 1, 115-43.
7. Deidda, L. (2006), “Interaction between Economic and Financial Development,” Journal of Monetary Economics, 53, 233-248.
8. Deidda, L., and B. Fattouh (2002), “Non-linearity between Finance and Growth,” Economic Letters, 74, 339-345.

9. Doumbia, D (2016), “Financial Development and Economic Growth in 43 Advanced and Developing Economies over the Period 1975-2009: Evidence of Non-linearity”, Applied Econometrics and International Development, Vol-16-1 (2016)
10. Durlauf, S. 2001. “Manifesto for a growth econometrics.” Journal of Econometrics 100: 65–69.
11. Eggoh, C J. (2010), “Financial development and growth: A panel smooth regression approach” Journal of Economic Development, 35, 1, 15-33.
12. Favara, G. (2003), “An Empirical Reassessment of the Relationship between Finance and Growth,” IMF Working Paper, 03/123, European I Department.
13. Fok, D., D. van Dijk, and P. Franses (2004), “A Multi-Level Panel STAR Model for US Manufacturing Sectors,” Working Paper, University of Rotterdam.
14. Gonzàlez, A., T. Terasvirta, and D. van Dijk (2005), “Panel Smooth Transition Regression Models, Series in Economics and Finance,” Working Paper, 604, Stockholm.
15. King, R.G., Levine, R. (1993a). “Finance and growth: Schumpeter might be right”. Quarterly Journal of Economics 108, 717–738
16. King, R.G., Levine, R. (1993b). “Finance, entrepreneurship, and growth: Theory and evidence”. Journal of Monetary Economics 32, 513–542
17. Levine (2005), “Finance and Growth: Theory and Evidence”, in Handbook of Economic Growth, Volume 1A. Edited by Philippe Aghion and Steven N. Durlauf
18. Lucas, R.E. (1988). “On the mechanics of economic development”. Journal of Monetary Economics 22, 3–42.
19. Miller, M.H. (1998). “Financial markets and economic growth”. Journal of Applied Corporate Finance 11, 8–14.
20. Ndikumana, L. (2000) ‘Financial Determinants of Domestic Investment in Sub-Saharan Africa: Evidence from Panel Data’, World Development, 28 (2): 381–400.
21. Robinson, J. (1952). The Rate of Interest and Other Essays. MacMillan, London. Chapter “The generalization of the general theory”.
22. Rousseau, P.L, Wachtel, P. (2000). “Equity markets and growth: cross-country evidence on timing and outcomes, 1980–1995”. Journal of Business and Finance 24, 1933-1957.
23. Yilmazkuday, H (2011), “Thresholds in Finance-Growth Nexus: A Cross Country Analysis”, World Bank Economic Review (2011), P- 1-18.