Optimal public investment, growth, and consumption: Evidence from African countries

Fosu, Augustin Kwasi, Getachew, Yoseph Yilma and Ziesemer, Thomas (2011). Optimal public investment, growth, and consumption: Evidence from African countries. UNU-MERIT.

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  • Author Fosu, Augustin Kwasi
    Getachew, Yoseph Yilma
    Ziesemer, Thomas
    Title Optimal public investment, growth, and consumption: Evidence from African countries
    Publication Date 2011
    Place of Publication Maastricht, NL
    Publisher UNU-MERIT
    Pages 48
    Abstract How much does public capital matter for economic growth? How large should it be? This paper attempts to answer these questions, taking the case of SSA countries. It develops and estimates a model that posits a nonlinear relationship between public investment and growth, to determine the growth-maximizing public investment GDP share. It empirically also accounts for the crowding-in and crowding-out effects between public and private investment, with equations estimated separately and simultaneously, using System GMM. The paper further runs simulation and examines the public investment GDP share that maximizes consumption. This is estimated to be between 8.4 percent and 11.0 percent. The results from estimating the growth model are in the middle of this range, which is larger than the observed value of 7.2 percent at the end of the sample period. These outcomes suggest that, on average, there has been public under-investment in Africa, contrary to previous findings.
    Keyword Public investment
    Economic growth
    Nonlinearity
    JEL O4
    H4
    Copyright Holder UNU-MERIT
    Copyright Year 2011
    Copyright type All rights reserved
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    Created: Wed, 11 Dec 2013, 16:14:54 JST