Conventional and Islamic Banks’ Performance in the Gulf Cooperation Council Countries; Efficiency and Determinants

This paper investigates the cost efficiency levels of the banking sectors of the Gulf Cooperation Council (GCC) countries for the period from 2001 to 2015 and provides a comparison of conventional and Islamic banks. We obtain measures of efficiency using a stochastic frontier model and the meta-frontier approach. The evidence demonstrates that Islamic banks are less efficient and have a weaker level of production technology than conventional banks. The cost efficiency of banks varies significantly across the six Gulf countries and over time. We adopt the results drawn from the meta-frontier model that allow to take into account the differences between the studied countries, and empirically examine the bank-specific, financial, macroeconomic, and political determinants of banking efficiency. The results provide evidence of the differential effects of the selected variables on the efficiency of conventional and Islamic banks. These variables affect the performance of the two types of banks in different ways and with different magnitudes.

     

Performance of the Ambient Tax: Does the Nature of the Damage Matter?

The ambient tax is often considered as an efficient instrument to achieve a first best outcome of ambient pollution when the regulator cannot observe individual emissions, or when monitoring costs are prohibitive. While this view is supported to a large extent by experimental findings, there remains several hurdles that hinder the implementation of the ambient tax in the field. One of these hurdles is the nature of the damage. Experimental findings suggest that the efficiency of the ambient tax is higher under external damage, i.e. if ambient pollution affects non-polluters (Spraggon in J Public Econ 84:427–456, 2002) than under internal damage, i.e. if ambient pollution affects polluters themselves (Cochard et al. in Environ Resour Econ 30:393–422, 2005). But this result rests on very different experimental settings. Therefore, we designed a new experiment that allows to compare external and internal damage within a common setting. Our main finding is that the ambient tax is equally efficient under internal and external damage.     

Food insecurity in developing countries

Despite improvements in the world food predicament, the underlying causes of food crises have not disappeared. The aim of this article is to improve understanding of food security problems in Asia, Africa and Latin America, and to assess the relative merits of alternative national and international intervention schemes. The article includes discussion of the concept of ‘food security’, policies that can be undertaken at the national level, a quantitative assessment of national food insecurity for a sample of LDCs, and an examination of the proposed international policies to enhance food security in food-deficit countries.