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Dr 

Nkomo, Nomusa Yolanda

Faculty: Faculty of Commerce, Administration and Law
Department: Economics
ORCID: https://orcid.org/0000-0002-6526-6227
Research Interest(s): Health economics, Local economic development, Macroeconomics.
Active Research Project(s): The health economics focusing mainly on the correlation between child health, child education and maternal tobacco use.
Active Community Engagement: The Economics and Entrepreneurship Education Program (TEEEP).
Biography: Dr. Nomusa Yolanda Nkomo is a lecturer at the University of Zululand Department of Economics, Faculty of Commerce, Administration, and Law. She holds a PhD in Economics, an MCom in Local Economics, and a Bcom in Economics and Econometrics, all from the University of Johannesburg. She lectures economics for undergraduate students. She has also supervised honours and masters’ students in the fields of health economics and local economic development. She has also coordinated the economics honours bridging and peer mentoring programs for first-year students. Under the Teaching Education, Economics, and Entrepreneurship Program (TEEEP), her community involvement focuses primarily on sixth- and seventh-grade students in primary schools. She has substantial publications and a book chapter in health economics, development economics, and health economics is her current area of research.
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20232
Author: Zungu, Lindokuhle Talent ×
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    PublicationJournal Article
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    The dynamic effect of public debt on economic growth in the era of macroprudential policy regime: a Bayesian approach
    2023
     | Emerald
    Purpose – This study aims to test the dynamic impact of public debt and economic growth on newlydemocratized African countries (South Africa and Namibia) and compare the findings with those of newlydemocratized European countries (Germany and Ukraine) during the period 1990–2022. Design/methodology/approach – The methodology involves three stages: identifying theappropriate transition variable, assessing the linearity between public debt and economic growth and selecting the order m of the transition function. The linearity test helps identify the nature of relationships between public debt and economic growth. The wild cluster bootstrap-Lagrange Multiplier test is used toevaluate the model’s appropriateness. All these tests would be executed using the Lagrange Multipliertype of test. Findings – The results signify the policy switch, as the authors find that the relationship between public debt and economic growth is characterized by two transitions that symbolize that the current stage of the relationship is beyond the U-shape; however, an S-shape. The results show that for newly democratized African countries, the threshold during the first waves was 50% of GDP, represented by a U-shape, which then transits to an inverted U-shape with a threshold of 65% of GDP. Then, for the European case, it was 60% of GDP, which is now 72% of GDP. Originality/value – The findings suggest that an escalating level of public debt has a negative impact on economic growth; therefore, it is important to implement fiscal discipline, prioritize government spending and reduce reliance on debt financing. This can be achieved by focusing on revenue generation, implementing effective taxation policies, reducing wasteful expenditures and promoting investment and productivity enhancing measures.
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    The optimal level of financial growth in view of a nonlinear macroprudential policy regime model: a Bayesian approach
    2023
     | MDPI
    A panel data analysis of nonlinear financial growth dynamics in a macroprudential policy regime was conducted on a panel of 10 African emerging countries from 1985–2021, where there had been a non-prudential regime from 1985–1999 and a prudential regime from 2000–2021. The paper explored the validity of the inverted U-shape hypothesis in the prudential policy regime as well as the threshold level at which excessive finance boosts growth using the Bayesian Spatial Lag Panel Smooth Transition Regression (BSPSTR) model. The BSPSTR model was adopted due to its ability to address the problems of endogeneity and heterogeneity in a nonlinear framework. Moreover, as the transition variable often varies across time and space, the effect of the independent variables can also be time- and space-varying. The results reveal evidence of a nonlinear effect between finance and growth, where the optimal level of financial development is found to be 92% of GDP, above which financial development decreases growth. The findings confirmed the Greenwood and Jovanovic hypothesis of an inverted U-shape relationship. Macroprudential policies were found to trigger the finance–growth relationship. The policy recommendation is that the financial sector should be given adequate consideration and recognition by, for example, implementing appropriate financial reforms, developing a suitable investment portfolio, and keeping spending on technological investment in Africa’s emerging countries below the threshold. Again, caution is needed when introducing macroprudential policies at a low level of the financial system.
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