Plattformbasierte Ökosysteme haben im Kartellrecht besondere Bedeutung erlangt. In der Arbeit entwickelt der Autor ein kohärentes Verständnis dieser Ökosysteme, indem er die technischen und ökonomischen Zusammenhänge sowie die wettbewerblichen Besonderheiten herausarbeitet. Er zeigt, dass...

Using two matched plant level skills and productivity datasets for UK manufacturing we document that (i) more productive firms hire more skilled workers: in 2000, plants at the top decile of the TFP distribution (controlling for their four-digit industry) hired workers with, on average, around...

Nearly all post-war recessions were preceded by oil-price shocks, but is this because spikes in the price of oil cause economic downturns? At the heart of this question lies an identification problem: oil prices and the state of the world economy are endogenously determined. This paper uses...

When a supply and demand model is recursive, with errors uncorrelated across the two equations, ordinary least squares (OLS) is the recommended estimation procedure. Supply to a daily fish market is determined by the previous night’s catch, so this would appear to be a good example of a...

Learning by exporting refers to the mechanism whereby firms improve their performance (productivity) after entering export markets. Although this mechanism is often mentioned in policy documents, a significant share of econometric studies has not found evidence for this hypothesis. This paper...