Abstract
This paper examines the effect of economic growth and the association of environmental degradation on economies’ technological change and technological catch-up. Using a conditional nonparametric frontier analysis to a sample of 73 economies over the time period 1980–2014, empirical evidence of the examined relationship is provided both under full and partial frontiers in the constant and variable returns to scale (VRS) models. Specifically, the newly proposed time-dependent conditional nonparametric frontier estimators have been applied. In our case the time-dependent conditional efficiency estimators allow us to model directly the effects of growth and time on economies’ estimated performance without requiring any specification of the production functional form and without assuming the separability condition between time, economic growth and the support of inputs and outputs. The overall results reveal that the efficiency results of full and partial frontiers tend to lead to the same results, except in the cases of full VRS models where energy use and carbon dioxide emissions are incorporated as an additional input and output, respectively. The results demonstrate that countries with a higher environmental efficiency are those that have signed the first agreement between nations (Kyoto Protocol) to mandate country-by-country reductions in greenhouse-gas emissions, while countries that have not signed are relatively inefficient. Ultimately, the empirical findings also suggest that the effect of economic growth is determined by economies’ development stage and geographical region.
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Notes
As suggested by Mastromarco and Simar (2014) a simple production function with three basic macroeconomic variables can help us to minimize the known DEA problem of ‘dimensionality’.
Previous PWT versions have been criticized for their variability and valuation problems (Johnson et al. 2013), but as Feenstra et al. (2013) emphasise the new version of PWT (v8.0) is more consistent over time and more transparent in its methods. The data can be downloaded from: http://www.ggdc.net/pwt.
Following the metadata glossary of World Bank, CO2 emissions stem from fossil fuels burning as well as the manufacture of cement and include emissions produced during consumption of solid, liquid, and gas fuels and gas flaring (Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, Tennessee, United States).
Following the metadata glossary of World Bank, energy use refers to primary energy use before transformation to other end-use fuels, equal to indigenous production plus imports and stock changes, minus exports and fuels supplied to ships and aircraft engaged in international transport (IEA Statistics© OECD/IEA 2014—http://www.iea.org/stats/index.asp subject to https://www.iea.org/t&c/termsandconditions/).
For the calculation of the full and partial frontiers (both for the conditional and the unconditional measures) several LP programs were carried out using STATA (Tauchmann 2012).
Bădin et al. (2012) suggest that median values of \( \alpha \) enable us to investigate the effect of the environmental variables on the distribution of efficiencies (technological catch-up). However, if \( \alpha \to 1 \) (i.e. \( \alpha \ge 0.9 \)) then the shift of the frontiers can also be examined through the Order-α frontiers since \( \lambda_{\alpha } \left( {x,y} \right) \to \lambda \left( {x,y} \right) \).
Due to the enormous quantity of the results obtained, the analytical (per country) efficiency estimates over the examined period cannot be presented. Therefore, in our analysis we present multiple groups of efficiencies in the principles of Henderson and Zelenyuk (2007). We have estimated the frontier using the whole sample size, and then we present the aggregates values of technical efficiencies for different country groups. Analytical results are available upon request.
The Northern America region consists only of Canada and the USA. We decide to include in our analysis the USA since it acts as a natural benchmark for the rest of countries both for conditional and unconditional efficiency estimates.
As mentioned, the results of subfigures 2c are attributed to the higher performance of USA rather the performance of Canada.
Naïve bootstrap is inconsistent for individual DEA applications (Simar and Wilson, 2000) but Kneip et al. (2003) have shown that sub-sampling bootstrap is consistent when the sub-sample size is smaller compared to the initial sample size considered. In general, although time-consuming and computing demanding, we may first correct for the bias in DEA efficiency estimates using appropriate bootstrapping and then to use the bias-corrected estimates in the Li-test (Simar and Zelenyuk, 2004, p. 14). Moreover, Simar and Zelenyuk (2004) propose two alternative bootstraps. The first relies on bootstrapping the Li-statistic using the DEA estimates after trimming the values equal to unity (Algorithm I) while the second relies on relies on bootstrapping the Li-statistic using the DEA estimates where those equal to unity are “smoothed” away from the bound by the addition of a small noise (Algorithm II).
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We would like to thank the anonymous reviewers for helpful and constructive comments that improved the quality of the paper. Any remaining errors are solely the authors’ responsibility.
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Halkos, G.E., Bampatsou, C. Economic growth and environmental degradation: a conditional nonparametric frontier analysis. Environ Econ Policy Stud 21, 325–347 (2019). https://doi.org/10.1007/s10018-018-0232-y
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DOI: https://doi.org/10.1007/s10018-018-0232-y
Keywords
- Economic growth
- Technological change
- Technological catch-up
- Environmental degradation
- Conditional nonparametric frontier
- Data envelopment analysis