The COVID-19 pandemic exogenously hit many economies early 2020. Exploiting treatment heterogeneity, we use a conditional difference-in-differences design to causally identify how COVID-19 impacted firms'…
We show that in school systems with grade retention or redshirting birth cohort size is negatively related to the grade-level share of students who are too old for their grade. This compositional effect gives…
Das ZEW wäre nicht das ZEW ohne seine Alumni und Alumnae – und so widmen wir das ZEW Monthly im April unserem Alumni-Netzwerk und seinen über 600 Mitgliedern.
With the final approval of the EU’s Artificial Intelligence Act (AI Act), it is now clear that general-purpose AI (GPAI) models with systemic risk will need to undergo adversarial testing. This provision is a…
