An Application of GMM Method in the Test of Relationship between Urbanization and Circulation Economic Growth

2013 ◽  
Vol 712-715 ◽  
pp. 3207-3210
Author(s):  
Yue Xi Liu ◽  
Zhen Bo Zhang
Keyword(s):  
Economic Growth ◽  
Panel Data ◽  
Data Model ◽  
Dynamic Panel Data ◽  
Labor Input ◽  
Dynamic Panel ◽  
Dynamic Panel Data Model ◽  
Impact Of Urbanization ◽  
The Impact ◽  
Positive Effect

To explore the impact of urbanization and economic growth on the development of circulation industry, this paper uses GMM method to estimate dynamic panel data model, based on panel data at provincial-level from 2001 to 2010 in China, after testing the endogeneity of urbanization and economic growth. The findings indicate that regional economic development, labor input and fixed investment has significant positive effect on output of circulation, while lagged output of circulation and level of urbanization has no significant effect on it.

The impact of leverage on discretionary investment: African evidence

2018 ◽  
Vol 9 (1) ◽  
pp. 108-125 ◽  
Author(s):  
Edson Vengesai ◽  
Farai Kwenda
Keyword(s):  
Panel Data ◽  
Data Model ◽  
Cash Flows ◽  
Dynamic Panel Data ◽  
Investment Policy ◽  
Panel Data Model ◽  
Dynamic Panel ◽  
Content Type ◽  
Dynamic Panel Data Model ◽  
The Impact

Purpose The purpose of this paper is to explore the impact of leverage on firms’ discretionary investment in Africa. Design/methodology/approach The authors employ a dynamic panel data model estimated with generalised method of moments (GMM) estimation techniques on the panel data of listed African non-financial firms. A dynamic model and the generalised methods of moments estimations are handy in controlling for unobserved heterogeneity, endogeneity, autocorrelation, heteroscedasticity, etc. Findings In spite of different settings, markets, leverage levels and methodologies, the authors found evidence that leverage constrains investment in African firms. The negative impact is more pronounced in firms with low-growth opportunities than in firms with high-growth opportunities. The results are inclined to the theory that leverage plays a disciplinary role to avoid overinvestment. Research limitations/implications African firms’ investment policy does not solely depend on the neoclassical fundamentals determinants of profitability, net worth and cash flows. Financing strategy also has a considerable bearing on the investment policy. The results provide evidence that leverage is a negative externality to the firm’s discretional investment policy for both lowly levered and highly leveraged firms. African firms’ should consider maintaining their low debt levels and rely more on internally generated funds so as not to suppress any available cash flows to interest payments and loan covenants from debt holders. Originality/value The study contributes to the literature on investment and financial leverage by the authors providing evidence from Africa, a developing continent, that has not been explored. It shows how conservative leverage levels of African firms, which have been reported to be rising, are impacting on investments. Pertaining to empirical methodology, the authors employ a dynamic panel data model, the GMM estimation technique, which is robust in controlling endogeneity, and a possible bi-directional causality between leverage and investment which have not been used in literature. The study also enables a comparison of the effect of high leverage and low leverage on firm’s discretional investment.

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