This paper sheds new light on the role of communication for cartel formation. Using machine learning to evaluate free-form chat communication among firms in a laboratory experiment, we identify typical communication patterns for both explicit cartel formation and indirect attempts to collude tacitly. We document that firms are less likely to communicate explicitly about price fixing and more likely ...
In 2020, Berlin introduced a rigorous rent-control policy responding to soaring prices by capping rents: the Mietendeckel (rent freeze). The German Constitutional Court revoked the policy only one year later. Although successful in lowering rents during its duration, the consequences for Berlin’s rental market and close-by markets are per se not clear. This article evaluates the short-term causal supply-side ...
In diesem Beitrag wird auf eine sozialökologisch integrierte Zielsetzung fokussiert, deren prinzipielle und praktische Herausforderungen exemplarisch anhand der regulativen Umsetzung eines ,Pro-Kopf-Emissionsbudgets‘ aufgezeigt werden. Es wird argumentiert, dass die weiterhin unzureichenden Bemühungen zum Erreichen des 1,5 Grad Ziels eine konsequente ökologische Ziel-Logik begründen: einen diskursiven ...
Studies of the crude oil market based on structural vector autoregressive (VAR) models typically assume a time-invariant model and transmission of shocks or they consider a time-varying model and shock transmission. We assume a heteroskedastic reduced-form VAR model with time-invariant slope coefficients and test for time-varying impulse responses in a model for the global crude oil market that includes ...