How much does public capital matter for economic growth? How large should it be? This paper attempts to answer these questions, taking the case of Sub-Saharan African (SSA) countries. It develops and estimates a model that posits a non-linear relationship between public investment and growth, to...

This paper argues that immigration can help to alleviate the burden aging presents for the welfare states of most Western Economies. We develop a macroeconomic framework which deals with the impact of both aging and immigration on economic growth. This is combined with a detailed model of the...