This paper revives the question of whether a temporary VAT change is an adequate instrument for crisis stabilization. In empirical assessments, we find that durable goods consumption fluctuates strongly over the business cycle and that VAT rate changes affect durable goods in particular. Therefore, we build a dynamic stochastic general equilibrium (DSGE) model that is capable of addressing this major ...
Using data on 4.1 million apps at the Google Play Store from 2016 to 2019, we document that GDPR induced the exit of about a third of available apps; and in the quarters following implementation, entry of new apps fell by half. We estimate a structural model of demand and entry in the app market. Comparing long-run equilibria with and without GDPR, we find that GDPR reduces consumer surplus and...
Physicians in primary care provide initial diagnosis and treatment for a diverse set of patients. However, whereas patients are demographically and socio-economically heterogeneous, physicians typically come from affluent and highly-educated backgrounds. As a result, there is often a mismatch between physicians and the community they serve. I investigate the role of patient-physician similarity...
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...
Wegen des Krieges hat die Ukraine den Transit von russischem Gas in Richtung Westen zum Teil eingestellt. Dazu eine Einordnung von Claudia Kemfert, Energieökonomin und Leiterin der Abteilung Energie, Verkehr, Umwelt im Deutschen Institut für Wirtschaftsforschung (DIW Berlin):
This article depicts the selectivity profiles of first-generation immigrants of multiple origins in 18 European destinations and investigates whether educational selectivity is relevant to their labour market performance. The theoretical account starts from the premise that the relative position individuals occupy in the educational distribution of their origin country represents—frequently unmeasured—characteristics ...
