Purpose

This study aims to test the role of infrastructure for economic growth. For this purpose, panel data of the world is selected from 1998 to 2018 and the study has used slope moderator to test the productivity of real economic activity with economic growth.

Design/methodology/approach

In this context, the feasible generalized least square method is adopted to estimate the results. Four types of infrastructure indicators i.e. quality of air, port, rail and road are used along with disaggregated GDP.

Findings

According to the results of this study, the role of industrial and agricultural value addition without infrastructure is negative. For industrial value addition, the cross product with all infrastructure types positively impacts economic growth. All the infrastructures, along with services value addition, except seaport, are contributing to economic growth positively. Along with agriculture value addition, only road infrastructure is contributing to economic growth positively. This study has also used two control variables i.e. quality of education and institutions. These variables are also found to be positive and significant with economic growth.

Originality/value

This study explores the moderating role of quality of infrastructure sector on real sector productivity, which is leading to economic growth.

中文翻译：

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高效的交通能否调节实体部门的生产力？

目的

这项研究旨在检验基础设施对经济增长的作用。为此，选取1998-2018年世界面板数据，研究采用斜率调节器检验实体经济活动的生产率与经济增长的关系。

设计/方法/方法

在此背景下，采用可行的广义最小二乘法来估计结果。使用四种类型的基础设施指标，即空气质量、港口质量、铁路质量和公路质量，以及分解的 GDP。

发现

根据本研究的结果，没有基础设施的工农业附加值的作用是负面的。对于工业增值，所有基础设施类型的交叉产品都会对经济增长产生积极影响。除海港外，所有基础设施以及服务增值都对经济增长做出了积极贡献。除了农业增值外，只有道路基础设施才能对经济增长做出积极贡献。本研究还使用了两个控制变量，即教育质量和机构。这些变量也被发现对经济增长是积极的和显着的。

原创性/价值

这项研究探讨了基础设施部门质量对实际部门生产率的适度作用，这导致了经济增长。