Toward an Understanding of Economic Growth in Africa: A Reinterpretation of the Lewis Model
Toward an Understanding of Economic Growth in Africa: A Reinterpretation of the Lewis Model
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DOI：
10.1016/j.worlddev.2016.12.008
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发表时间：
2018-09-01
影响因子：
6.9
通讯作者：
McMillan, Margaret
中科院分区：
文献类型：
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作者：
Diao, Xinshen;McMillan, Margaret
我们建立了一个经济模型，它具有刘易斯（1954）的许多特征，但也包括刘易斯（1979）所描述的中间部门。我们的模型强调了以下结构变化决定因素的重要性：（i）农业部门的生产率增长;（ii）非农业部门的生产率增长;（iii）贸易条件。公共投资促进了所有部门的生产率增长，但当公共投资由外国资金流入供资时，也会导致真实的汇率升值，导致开放的现代部门收缩。这些结果部分解释了卢旺达和非洲其他地区最近的增长模式，在这些地区，非贸易部门或我们所说的中间部门比贸易部门扩张得更快。我们的研究结果还突出了迫切需要公共投资而税基非常有限的穷国所面临的困境。(C)2016爱思唯尔有限公司版权所有。
We develop a model economy that has many of the features of Lewis (1954) but that also includes an in-between sector as described by Lewis (1979). Our model underscores the importance of the following determinants of structural change: (i) productivity growth in the agricultural sector; (ii) productivity growth in the nonagricultural sector and; (iii) the terms of trade. Public investment enhances productivity growth in all sectors but when it is financed by foreign inflows, it also causes a real exchange rate appreciation leading to a contraction in the open modern sector. These results provide a partial explanation for recent patterns of growth in Rwanda and elsewhere in Africa where the non-tradables or what we call the in-between sector has expanded more rapidly than the tradable sector. Our results also highlight the dilemma faced by poor countries in dire need of public investment with a very limited tax base. (C) 2016 Elsevier Ltd. All rights reserved.