The literature that tests for U-shaped relationships using panel data, such as those between pollution and income or inequality and growth, reports widely divergent (parametric and non-parametric) empirical findings. We explain why lack of identification lies at the root of these differences. To...

With the advent of globalization, economic and financial interactions among countries have become widespread. Given technological advancements, the factors of production can no longer be considered to be just labor and capital. In the pursuit of economic growth, every country has sensibly...

This paper examines the sources of stickiness in aggregate consumption growth. We first derive a dynamic consumption equation which encompasses many recent developments in consumption theory: habit formation, intertemporal substitution effects, consumption based on current income, and...