How does online advertising affect consumer behaviour, product pricing and competition? To analyse this, I develop a theory of digital markets where an intermediary provides a platform for firms to advertise their product and where consumers need to engage in costly search if they want to learn about the product characteristics. First, I show that when prices are observable...
This paper provides novel empirical results on the welfare impact of sanctions when countries coordinate their sanctions packages. To do so, weconduct simulations with the Caliendo and Parro (2015) CGE model of the world economy that provides changes in welfare under different hypothetical setups of sanctions coalitions. Focusing on the 2012 wave of sanctions against Iran and the 2014 sanctions...
Over the course of the 20th century, governments have frequently used rent control to keep rents affordable, especially in times of crisis when housing is scarce. Existing research shows that rent control has undesirable side effects, such as overall societal welfare losses, market misallocation, a declining housing supply, and lower mobility. However, there has been little research examining the effect ...
Based on data from the German Socio-Economic Panel, we document a significant rise in monthly earnings in- equality between 1993 and 2018. The main contributors are inter-temporal increases in working hours inequality and increases in the covariance between working hours and hourly wages, while changes in the distribution of hourly wages play a minor role. Applying a novel double decomposition technique ...
We develop a New Keynesian model with household heterogeneity and bounded rationality in the form of cognitive discounting. The interaction of household heterogeneity and bounded rationality generates amplification of monetary and fiscal policy through indirect general equilibrium effects while simultaneously ruling out the forward guidance puzzle and remaining stable at the effective lower bound. ...
Natural gas prices in Germany saw a strong increase at the end of 2021, subsequently worsening with the start of the war in Ukraine in February 2022, raising concerns about the distributional consequences. Our study shows that low-income households are affected the most by the natural gas price increase. Low-income households pay at the median 11.70 percent of their equivalent income on gas bills, ...
Steam coal exporters face increasing uncertainty about future coal demand and risks of asset stranding. Nevertheless, new export-oriented coal mine projects are still brought forward. In this study, we use the coal sector model COALMOD-World to assess the economic prospects of investments in the export-oriented steam coal sector, and in particular of coal mines in the Galilee Basin, Australia. We parameterize ...