Combining a Dynamic Computable General Equilibrium (DCGE) model of the Yemeni economy with a microsimulation model that captures the link between changes in household incomes and changes in nutrition status, this paper provides a quantitative assessment of the agricultural, economy-wide, and...

The German current account balance has moved from surplus to deßcit in the course of unificalion. A theorelical model for the current account, encompassing the elaslicities, the monetary, and the absorptions approach, is set up and lested for Germany and the United States, using cointegration...

The primary aim of the paper is to place current methodological discussions on empirical modeling contrasting the 'theory first' versus the 'data first' perspectives in the context of a broader methodological framework with a view to constructively appraise them. In particular, the paper focuses...

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...

In the discussion about the structure and evolution of financial systems, the US separated and the German universal banking system are commonly considered as antipodes. This paper shows that the differences in the role of banks in these two economies are less pronounced than the conventional...

This paper presents an online-experiment on overconfidence in the context of financial markets. Our subject pool consists of institutional investors, investment advisors and individual investors, all of them being registered users of a large online platform for market sentiment data. Due to...

The paper starts with a short survey on the main ideas of portfolio theory. Based on this, mean-variance efficient portfolios (stock as well as bond portfolios) for German investors of different degrees of risk aversion are constructed. It is shown that for them international diversification of...

The economics profession appears to have been unaware of the long build-up to the current worldwide financial crisis and to have significantly underestimated its dimensions once it started to unfold. In our view, this lack of understanding is due to a misallocation of research efforts in...

Bond as well as stock portfolios of German investors are compared to the respective mean-variance-efficient portfolios. It is found that independent of the investors' degree of risk aversion, German investors' portfolios deviate significantly from the mean-variance-efficient ones, especially the...

A fall in house prices due to a change in its fundamental value redistributes wealth from those long housing (for whom the fundamental value of the house they own exceeds the present discounted value of their planned future consumption of housing services) to those short housing. In a closed...