Refereed Journals

Clustered bids and a missing mass of nearly tied bids have both been proposed as markers of collusion. We present causal empirical evidence from an actual pro- curement cartel that bidding involves both…

Germany has become the second-most important destination for migrants worldwide. Using all waves from the microcensus, we study their labour market integration over the last 50 years and highlight differences to…

Governments increasingly use nudges to improve tax collection. We synthesise the growing literature on nudging experiments using meta-analytical methods. We find that, relative to the baseline where about a…

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…