Sustainable intensification of Ghana's smallholder farming is critical to mitigate rural poverty. Innovations for sustainable intensification include agro-ecological practices, which build up soil fertility, and mulching, which conserves soil moisture. To stimulate the adoption of these...

Germany remains Europe's largest and most diversified source of new technology, but still lags in the fastest growing areas of today's high technology. After World War II, West-German technology policy sought to rebuild the institutions which had supported Germany's leadership in the high-tech...

This paper proposes an approach for estimating the uncertainty associated with model-based macroeconomic forecasts. We argue that estimated forecast intervals should account for the uncertainty arising from selecting the specification of an empirical forecasting model from the sample data. To...

Countries have employed a variety of non-pharmaceutical interventions (NPIs) in order to curtail the COVID-19 pandemic. However, the success of individual measures in reducing the number of infections remains controversial. This paper exploits a panel data set of 107 countries to estimate the...

Using real-time data, we analyze how the systematic expectation errors of professional forecasters in 19 advanced economies depend on the state of the business cycle. Our results indicate that the general result that forecasters systematically overestimate output growth (across all countries)...

Some recent empirical studies deny any direct performance effects of measures of geography and conclude that institutions trump all other potential determinants of development. For given effects of institutional quality, our empirical results indicate quantitatively important direct negative...

We estimate the relative roles of factor inputs and productivity in explaining the level of economic development, which is measured as output per worker. For a large sample of countries, we show that alternative identifying productivity assumptions and alternative measures of human capital have...

Countries with the highest labor productivity overwhelmingly lie in the world's temperate climatic zones far away from the equator. The question we address is whether climatic conditions as measured by distance from the equator remain correlated with labor productivity after other variables are...

In diesem Arbeitspapier wird die Hypothese untersucht, dass die gesamtwirtschaftliche Leistungsfähigkeit unter dem Einfluss demographischer und bildungspolitischer Faktoren steht. Als erstes wird ein Überblick über die Entwicklung des Qualifikationsangebots und der Arbeitsproduktivität in...

I reconsider the primacy of institutions over geography as an explanatory factor of cross-country differences in economic performance, which has recently been postulated by Acemoglu et al. (2001) and others. My estimates show that the reported missing direct performance effects of a measure of...