Abstract
This study estimates the tipping points of financial development in the finance – growth dynamics in the case of OECD countries as they experience considerably higher levels of financial development. Using a unique balanced panel data set of 31 years from 1983 to 2013 for 27 OECD countries, we provide new evidence on the presence of nonlinearity as there is an inverted U-shaped relationship between finance and growth in the long run. The results show that there exists a tipping point of the finance-growth relationship estimated at 141.6% of GDP. We find that surpassing the threshold level results in deceleration of economic growth as excess finance is undesirable. Based on the panel Granger causality test results, we show that financial development should be associated with optimal growth performance. Our findings for OECD countries provide some useful inferences to the emerging and developing economies in designing their financial development strategies.
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Notes
The Organization for Economic Cooperation and Development (OECD) is a unique forum of 34 democractic nations that promote market economies to promote economic growth, prosperity, and sustainable development. According to the OECD, the member countries account for 63% of world GDP, three-quarters of world trade, 95% of world official development assistance, over half of the world’s energy consumption, and 18% of the world’s population.
Most studies use the log of financial development and therefore allow for a non-linear relationship between financial development and economic growth. However, they do not include higher polynomial terms and thus they do not allow for a non-monotonic relationship between these two variables.
For a detailed and illuminating discussion of the concept and process of financial development per se, see de la Torre et al. (2011).
Our attempts to include life expectancy, government expenditure and education (specifically, secondary school enrolment) resulted in too many missing observations.
A source of concern when estimating fixed effect model is that the limited within-country variability of the data tends to amplify the attenuation bias brought about by the presence of measurement errors. Our variables of interest, however, do not display substantial cross-country and within-country variation.
Among the two specification tests, the first is the Sargan test of over-identifying restrictions, which tests the overall validity of the instruments by analyzing the sample analog of the moment conditions used in the estimation process. The second test examines the hypothesis that the error term εi,t is not serially correlated. In both the difference regression and the system difference-level regression we test whether the differenced error term is second-order serially correlated (by construction, the differenced error term is probably first-order serially correlated even if the original error term is not).
We report the thresholds at which financial development starts having a negative effect on growth.
Easterly et al. (2000), on a related subject, observe that greater credit or a deeper financial system is significantly associated with less volatility of growth, but the relationship appears also nonlinear.
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Swamy, V., Dharani M The tipping point of financial development? – evidence from OECD countries. Int Econ Econ Policy 17, 125–165 (2020). https://doi.org/10.1007/s10368-018-0420-z
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DOI: https://doi.org/10.1007/s10368-018-0420-z
Keywords
- Financial development
- Economic growth
- Panel data estimation
- Non-monotonicity
- Dynamic panel threshold
- OECD countries