This paper studies the effects of the introduction of a new mass medium on criminal activity in Germany. The paper asks the question of whether highspeed internet leads to higher/lower sex crime offences and murder. I use unique German data on criminal offences and broadband internet measured at...

Using combined data from the German Pension Insurance and the Federal Employment Agency (BASiD), this study proposes different procedures for imputing the pre-unification education variable in the BASiD data. To do so, we exploit information on education-related periods that are creditable for...

This paper studies effects of the introduction of a new digital mass medium on reemployment of unemployed job seekers. We combine data on high-speed (broadband) internet availability at the local level with individual register data on the unemployed in Germany. We address endogeneity by...

This paper studies whether the transition from a centrally planned to a market economy offers new perspectives for those who, in economic terms, were relatively deprived under the old regime. Previous empirical research on this question has been limited by the availability of representative...

Policy makers often try to optimize local law enforcement by reorganizing police forces. We study the effects of police reallocation via station closures on municipal crime by exploiting a quasi-experiment where a centrally administered reform substantially reduced the number of police stations....

Does the administrative organization of police affect crime? In answering this question, we focus on the reorganization of local police agencies. Specifically, we study the effects police force reallocation via station closures has on local crime. We do this by exploiting a quasiexperiment where...

This paper investigates the effect of the size of the local labor market on skill mismatch. Using survey data for Germany, I find that workers in large cities are both less likely to be overqualified for their job and to work in a different field than the one they are trained for. Different...

In this paper, we estimate the effect of pupil's relative age within the first grade of primary school on math and reading test scores at age 15. The main objective is to evaluate the long-term causal effect of relative age in the first grades of primary school on pupil's test in 16 different...

In this paper, we use repeated cross-section data on pupils in Brazil to estimate the effect of the availability and use of computers and internet as pedagogical tools on math and reading test scores. Computers are increasingly commonly used in schools and their effectiveness in improving...

This paper studies the effect of teacher expectations on essay grades in an experimental setting. To this purpose, we randomly assign Turkish or German first names to a set of essays so that some teachers believe a given essay was written by a German native pupil, whereas others believe it was...