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Nutrition and economic growth in South Africa: A momentum threshold autoregressive (MTAR) approach

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  • Phiri, Andrew
  • Dube, Wisdom

Abstract

Purpose: This purpose of our paper is to examine asymmetric co-integration effects between nutrition and economic growth for annual South African data from the period 1961-2013. Design/methodology/approach: We deviate from the conventional assumption of linear co-integration and pragmatically incorporate asymmetric effects in the framework through a fusion of the momentum threshold autoregressive and threshold error correction (MTAR-TEC) model approaches, which essentially combines the adjustment asymmetry model of Enders and Silkos (2001); with causality analysis as introduced by Granger (1969); all encompassed by/within the threshold autoregressive (TAR) framework, a la Hansen (2000). Findings: The findings obtained from our study uncover a number of interesting phenomena for the South Africa economy. Firstly, in coherence with previous studies conducted for developing economies, we establish a positive relationship between nutrition and economic growth with an estimated income elasticity of nutritional intake of 0.15. Secondly, we find bi-direction causality between nutrition and economic growth with a stronger causal effect running from nutrition to economic growth. Lastly, we find that in the face of equilibrium shocks to the variables, policymakers are slow to responding to deviations of the variables from their co-integrated long run steady state equilibrium. Originality/value: In our study, we make a novel contribution to the literature by exploring asymmetric modelling in the correlation between nutrition intake and economic growth for the exclusive case of South Africa.

Suggested Citation

  • Phiri, Andrew & Dube, Wisdom, 2014. "Nutrition and economic growth in South Africa: A momentum threshold autoregressive (MTAR) approach," MPRA Paper 52950, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:52950
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    References listed on IDEAS

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    Cited by:

    1. Taiwo, Kayode, 2018. "A contribution to the health-growth empirics on Africa," MPRA Paper 111023, University Library of Munich, Germany, revised 31 Aug 2020.
    2. Ogundari, Kolawole & Aromolaran, Adebayo, 2016. "On the causal relationship between nutrition and economic Growth: Evidence from sub-Saharan Africa," 2016 Annual Meeting, July 31-August 2, Boston, Massachusetts 235352, Agricultural and Applied Economics Association.
    3. Ogundari, Kolawole & Ito, Shoichi & Okoruwa, Victor, 2014. "Estimating nutrition-income elasticities in sub-Saharan African:Implication on health," MPRA Paper 63523, University Library of Munich, Germany.

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    More about this item

    Keywords

    Nutrition; Economic growth; Threshold co-integration; Asymmetric causality; South Africa;
    All these keywords.

    JEL classification:

    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Estimation: General
    • E20 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - General (includes Measurement and Data)
    • I15 - Health, Education, and Welfare - - Health - - - Health and Economic Development

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