Here is the abstract of an interesting article I came across at work this morning. Note that it's written by highly respected economists from Harvard, Yale and Chicago.
Here is the link to the abstract and publication details.
We investigate empirically the determinants of the quality of governments in a large cross-section of countries. We assess government performance using measures of government intervention, public sector efficiency, public good provision, size of government, and political freedom. We find that countries that are poor, close to the equator, ethnolinguistically heterogeneous, use French or socialist laws, or have high proportions of Catholics or Muslims exhibit inferior government performance. We also find that the larger governments tend to be the better performing ones. The importance of historical factors in explaining the variation in government performance across countries sheds light on the economic, political, and cultural theories of institutions.