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Knowledge-Based Economy Capacity Building for Developing Countries: A Panel Analysis in Southern African Development Community

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  • Koketso Phale

    (Department of Statistics, School of Finance and Economics, Jiangsu University, Zhenjiang 212013, China)

  • Fanglin Li

    (Department of Statistics, School of Finance and Economics, Jiangsu University, Zhenjiang 212013, China)

  • Isaac Adjei Mensah

    (Institute of Applied Systems Analysis (IASA), School of Mathematics, Jiangsu University, Zhenjiang 212013, China)

  • Akoto Yaw Omari-Sasu

    (Department of Statistics and Actuarial Science, Kwame Nkrumah University of Science and Technology, Kumasi AK-039, Ghana)

  • Mohammed Musah

    (School of Finance and Economics, Jiangsu University, Zhenjiang 212013, China)

Abstract

The Southern African Development Community is lagging behind in terms of knowledge economy relative to other regions worldwide. This dramatically reduces the chances of keeping up with their economically established counterparts in terms of sustainable development. This paper therefore, applies multivariate panel data analysis which is predicted on the Cobb–Douglas production function to analyze the affiliation flanked by knowledge-based economy pillars and economic growth from 1998–2018. The World Bank knowledge-based economy framework is employed. To achieve the study goal, the long-run effect regarding proxies of each pillar in the knowledge-based economy on economic growth is first estimated. Afterwards, the average impact of each pillar is examined using the average impact index (AII). Employment of both conventional unit root and co-integration tests showed all observed series are stationary and co-integrated. Further estimation of the long-run relationship using both static and dynamic models (fixed effect and generalized method of moment) portrayed that government effectiveness, adjusted savings on education expenditure, tertiary enrollment, scientific and technical journals, and mobile cellular subscriptions have significant positive impact on economic growth. Finally, the AII estimation unveiled that the innovation pillar is the most impactful aspect on economic growth followed by education and skills with the least being information and communication technology infrastructure. Feasible policy recommendations are further suggested.

Suggested Citation

  • Koketso Phale & Fanglin Li & Isaac Adjei Mensah & Akoto Yaw Omari-Sasu & Mohammed Musah, 2021. "Knowledge-Based Economy Capacity Building for Developing Countries: A Panel Analysis in Southern African Development Community," Sustainability, MDPI, vol. 13(5), pages 1-28, March.
  • Handle: RePEc:gam:jsusta:v:13:y:2021:i:5:p:2890-:d:512371
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    References listed on IDEAS

    as
    1. Valero, Anna & Van Reenen, John, 2019. "The economic impact of universities: Evidence from across the globe," Economics of Education Review, Elsevier, vol. 68(C), pages 53-67.
    2. Elkhan Richard Sadik-Zada & Wilhelm Loewenstein & Yadulla Hasanli, 2019. "Commodity Revenues, Agricultural Sector and the Magnitude of Deindustrialization: A Novel Multisector Perspective," Economies, MDPI, vol. 7(4), pages 1-15, November.
    3. Vanessa S. Tchamyou & Simplice A. Asongu & Nicholas M. Odhiambo, 2019. "The Role of ICT in Modulating the Effect of Education and Lifelong Learning on Income Inequality and Economic Growth in Africa," African Development Review, African Development Bank, vol. 31(3), pages 261-274, September.
    4. Pradhan, Rudra P. & Arvin, Mak B. & Bahmani, Sahar, 2018. "Are innovation and financial development causative factors in economic growth? Evidence from a panel granger causality test," Technological Forecasting and Social Change, Elsevier, vol. 132(C), pages 130-142.
    5. Nguena Christian Lambert & Tsafack Nanfosso Roger, 2014. "On the Sensitivity of Banking Activity Shocks: Evidence from the CEMAC Sub-region," Economics Bulletin, AccessEcon, vol. 34(1), pages 354-372.
    6. Vanessa Simen Tchamyou, 2017. "The Role of Knowledge Economy in African Business," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 8(4), pages 1189-1228, December.
    7. Simplice Asongu & Jacinta C. Nwachukwu, 2016. "PhD by Publication as an Argument for Innovation and Technology Transfer: with Emphasis on Africa," Working Papers of the African Governance and Development Institute. 16/030, African Governance and Development Institute..
    8. Simplice A. Asongu, 2017. "Boosting Scientific Publications in Africa: Which IPRs Protection Channels Matter?," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 8(1), pages 197-210, March.
    9. Stephen Oluwatobi & Isaiah Olurinola & Philip Alege & Adeyemi Ogundipe, 2020. "Knowledge-driven economic growth: the case of Sub-Saharan Africa," Contemporary Social Science, Taylor & Francis Journals, vol. 15(1), pages 62-81, January.
    10. Simplice Asongu, 2015. "The impact of mobile phone penetration on African inequality," International Journal of Social Economics, Emerald Group Publishing Limited, vol. 42(8), pages 706-716, August.
    11. Amavilah, Voxi & Asongu, Simplice A. & Andrés, Antonio R., 2017. "Effects of globalization on peace and stability: Implications for governance and the knowledge economy of African countries," Technological Forecasting and Social Change, Elsevier, vol. 122(C), pages 91-103.
    12. Sassi, Seifallah & Goaied, Mohamed, 2013. "Financial development, ICT diffusion and economic growth: Lessons from MENA region," Telecommunications Policy, Elsevier, vol. 37(4), pages 252-261.
    13. John C. Anyanwu, 2012. "Why Does Foreign Direct Investment Go Where It Goes?: New Evidence From African Countries," Annals of Economics and Finance, Society for AEF, vol. 13(2), pages 425-462, November.
    14. M. Hashem Pesaran, 2021. "General diagnostic tests for cross-sectional dependence in panels," Empirical Economics, Springer, vol. 60(1), pages 13-50, January.
    15. Simplice A. Asongu, 2017. "Knowledge Economy Gaps, Policy Syndromes, and Catch-Up Strategies: Fresh South Korean Lessons to Africa," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 8(1), pages 211-253, March.
    16. Slesman, Ly & Baharumshah, Ahmad Zubaidi & Ra'ees, Wahabuddin, 2015. "Institutional infrastructure and economic growth in member countries of the Organization of Islamic Cooperation (OIC)," Economic Modelling, Elsevier, vol. 51(C), pages 214-226.
    17. Asongu, Simplice A. & Orim, Stella-Maris I. & Nting, Rexon T., 2019. "Inequality, information technology and inclusive education in sub-Saharan Africa," Technological Forecasting and Social Change, Elsevier, vol. 146(C), pages 380-389.
    18. Lingaraj MALLICK & Pradeep Kumar DAS & Kalandi Charan PRADHAN, 2016. "Impact of educational expenditure on economic growth in major Asian countries: Evidence from econometric analysis," Theoretical and Applied Economics, Asociatia Generala a Economistilor din Romania - AGER, vol. 0(2(607), S), pages 173-186, Summer.
    19. Simplice A. Asongu & Nicholas M. Odhiambo, 2019. "Basic formal education quality, information technology, and inclusive human development in sub‐Saharan Africa," Sustainable Development, John Wiley & Sons, Ltd., vol. 27(3), pages 419-428, May.
    20. Sylvie Kobzev Kotásková & Petr Procházka & Luboš Smutka & Mansoor Maitah & Elena Kuzmenko & Markéta Kopecká & Vladimír Hönig, 2018. "The Impact of Education on Economic Growth: The Case of India," Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Mendel University Press, vol. 66(1), pages 253-262.
    21. Ayoub Yousefi, 2011. "The impact of information and communication technology on economic growth: evidence from developed and developing countries," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 20(6), pages 581-596, November.
    22. Hamid Sepehrdoust & Saber Zamani Shabkhaneh, 2015. "Impact of Knowledge-based Components on Total Factor Productivity of MENA Countries," Iranian Economic Review (IER), Faculty of Economics,University of Tehran.Tehran,Iran, vol. 19(2), pages 149-163, Spring.
    23. Antonio Andrés & Simplice Asongu, 2013. "Fighting Software Piracy: Which Governance Tools Matter in Africa?," Journal of Business Ethics, Springer, vol. 118(3), pages 667-682, December.
    24. Simplice Asongu, 2016. "Reinventing Foreign Aid For Inclusive And Sustainable Development: Kuznets, Piketty And The Great Policy Reversal," Journal of Economic Surveys, Wiley Blackwell, vol. 30(4), pages 736-755, September.
    25. Tchamyou, Vanessa S. & Erreygers, Guido & Cassimon, Danny, 2019. "Inequality, ICT and financial access in Africa," Technological Forecasting and Social Change, Elsevier, vol. 139(C), pages 169-184.
    26. repec:agr:journl:v:5(582):y:2013:i:5(582):p:15-26 is not listed on IDEAS
    27. Omri, Anis & Nguyen, Duc Khuong & Rault, Christophe, 2014. "Causal interactions between CO2 emissions, FDI, and economic growth: Evidence from dynamic simultaneous-equation models," Economic Modelling, Elsevier, vol. 42(C), pages 382-389.
    28. Wilson, Ross, 2016. "Does Governance Cause Growth? Evidence from China," World Development, Elsevier, vol. 79(C), pages 138-151.
    29. repec:ipg:wpaper:2014-542 is not listed on IDEAS
    30. Bulent Guloglu & R. Tekin, 2012. "A Panel Causality Analysis of the Relationship among Research and Development, Innovation, and Economic Growth in High-Income OECD Countries," Eurasian Economic Review, Springer;Eurasia Business and Economics Society, vol. 2(1), pages 32-47, June.
    31. Shahbaz, Muhammad, 2012. "Does trade openness affect long run growth? Cointegration, causality and forecast error variance decomposition tests for Pakistan," Economic Modelling, Elsevier, vol. 29(6), pages 2325-2339.
    32. Lingaraj MALLICK & Pradeep Kumar DAS & Kalandi Charan PRADHAN, 2016. "Impact of educational expenditure on economic growth in major Asian countries: Evidence from econometric analysis," Theoretical and Applied Economics, Asociatia Generala a Economistilor din Romania - AGER, vol. 0(2(607), S), pages 173-186, Summer.
    33. Alhassan A-W Karakara & Evans S. Osabuohien, 2019. "Households’ ICT Access and Educational Vulnerability of Children in Ghana," Working Papers 19/088, European Xtramile Centre of African Studies (EXCAS).
    34. Letiche, John M., 2006. "Positive economic incentives: New behavioral economics and successful economic transitions," Journal of Asian Economics, Elsevier, vol. 17(5), pages 775-796, November.
    35. Ioan Radu PETRARIU & Robert BUMBAC & Radu CIOBANU, 2013. "Innovation: a path to competitiveness and economic growth. The case of CEE countries," Theoretical and Applied Economics, Asociatia Generala a Economistilor din Romania - AGER, vol. 0(5(582)), pages 15-26, May.
    36. Jens K. Perret, 2015. "Comments on the Impact of Knowledge on Economic Growth across the Regions of the Russian Federation," EIIW Discussion paper disbei207, Universitätsbibliothek Wuppertal, University Library.
    37. Çoban, Serap & Topcu, Mert, 2013. "The nexus between financial development and energy consumption in the EU: A dynamic panel data analysis," Energy Economics, Elsevier, vol. 39(C), pages 81-88.
    38. Abdulai, Awudu & Aubert, Dominique, 2004. "Nonparametric and parametric analysis of calorie consumption in Tanzania," Food Policy, Elsevier, vol. 29(2), pages 113-129, April.
    39. Stephen Oluwatobi & Oluyomi Ola-David & Isaiah Olurinola & Philip Alege & Adeyemi Ogundipe, 2016. "Human Capital, Institutions and Innovation in Sub-Saharan Africa," International Journal of Economics and Financial Issues, Econjournals, vol. 6(4), pages 1507-1514.
    40. Leonce Ndikumana & James Boyce, 2011. "Capital flight from sub-Saharan Africa: linkages with external borrowing and policy options," International Review of Applied Economics, Taylor & Francis Journals, vol. 25(2), pages 149-170.
    41. Stern, David I., 2004. "The Rise and Fall of the Environmental Kuznets Curve," World Development, Elsevier, vol. 32(8), pages 1419-1439, August.
    42. T. S. Breusch & A. R. Pagan, 1980. "The Lagrange Multiplier Test and its Applications to Model Specification in Econometrics," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 47(1), pages 239-253.
    43. Ghosh, Saibal, 2016. "Does mobile telephony spur growth? Evidence from Indian states," Telecommunications Policy, Elsevier, vol. 40(10), pages 1020-1031.
    44. Christian-Lambert Lambert Nguena & Roger Tsafack-Nanfosso, 2014. "On the Sensitivity of Banking Activity to Macroeconomic Shocks: Evidence from CEMAC Sub-region [Sensibilité du Secteur Bancaire aux Chocs Macroéconomiques: Cas de la sous-région CEMAC]," Post-Print halshs-01097850, HAL.
    45. Katrakilidis, Constantinos & Trachanas, Emmanouil, 2012. "What drives housing price dynamics in Greece: New evidence from asymmetric ARDL cointegration," Economic Modelling, Elsevier, vol. 29(4), pages 1064-1069.
    46. Ebrahim Gorji & Masoomeh Alipourian, 2011. "The Knowledge Economy & the Knowledge Assessment Methodology (The case study of Iran & Some other Countries)," Iranian Economic Review (IER), Faculty of Economics,University of Tehran.Tehran,Iran, vol. 16(2), pages 43-73, spring.
    47. Simplice Asongu & Jacinta C. Nwachukwu, 2017. "Recent finance advances in information technology for inclusive development: a survey," Working Papers of the African Governance and Development Institute. 17/009, African Governance and Development Institute..
    48. Myovella, Godwin & Karacuka, Mehmet & Haucap, Justus, 2020. "Digitalization and economic growth: A comparative analysis of Sub-Saharan Africa and OECD economies," Telecommunications Policy, Elsevier, vol. 44(2).
    49. Chindo Sulaiman & Umar Bala & Bulama Abiso Tijani & Salisu Ibrahim Waziri & Ibrahim Kabiru Maji, 2015. "Human Capital, Technology, and Economic Growth," SAGE Open, , vol. 5(4), pages 21582440156, November.
    50. Alhassan A-W Karakara & Evans S. Osabuohien, 2019. "Households’ ICT Access and Educational Vulnerability of Children in Ghana," Working Papers of the African Governance and Development Institute. 19/088, African Governance and Development Institute..
    51. Manuel Arellano & Stephen Bond, 1991. "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(2), pages 277-297.
    52. Niklas, Britta & Sadik-Zada, Elkhan Richard, 2019. "Income Inequality and Status Symbols: The Case of Fine Wine Imports," Journal of Wine Economics, Cambridge University Press, vol. 14(4), pages 365-373, November.
    53. Raéf Bahrini & Alaa A. Qaffas, 2019. "Impact of Information and Communication Technology on Economic Growth: Evidence from Developing Countries," Economies, MDPI, vol. 7(1), pages 1-13, March.
    54. Brandt, Nicola, 2007. "Mark-ups, economies of scale and the role of knowledge spillovers in OECD industries," European Economic Review, Elsevier, vol. 51(7), pages 1708-1732, October.
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