Macroeconomic productivity is modelled as a Cobb-Douglas function of private and public R&D stocks in recent literature. The slope parameters of a growth rate version may change over time and with circumstances. Using the method of functional-coefficient regression, we show that human capital,...

We extend existing data sets for domestic and foreign private and public R&D stocks as well as labour-augmenting technical change data based on CES production functions. We cover slightly more periods and many more countries, now 44 up from 17. We consider panel unit root issues for a large...

The literature on the effects of aid and remittances as a share of GDP on growth of the GDP per capita has placed much emphasis on growth regressions thereby emphasising only the direct effects on growth. In order to get the total effect one has to capture the indirect ones too and integrate...

This paper analyses the way 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...