Recent studies for primary and secondary education find positive effects of the share of girls in the classroom on achievement of boys and girls. This study examines whether these results can be extrapolated to post-secondary education. We conduct an experiment in which the shares of girls in...

Previous research shows that ethnic minority students perform poorer in school when they are taught by ethnic majority teachers. Why this is the case was unclear. This paper focuses on one important potential explanation: I examine whether ethnic majority teachers grade minority and majority...

We investigate the impact of obstetrician supervision, as opposed to midwife supervision, on the short-term health of low-risk newborns. We exploit a unique policy rule in the Netherlands that creates a large discontinuity in the probability of a low-risk birth being attended by an obstetrician...

We use event-study models based on staggered summer vacations in Germany to estimate the effect of school re-openings after the summer of 2021 on the spread of SARS-CoV-2. Estimations are based on daily counts of confirmed coronavirus infections across all 401 German counties. Our results are...

Schulen tragen nicht zu den im Moment steigenden Corona-Fallzahlen bei. Das Wiederöffnen der Schulen nach den deutschen Sommerferien trug vermutlich sogar dazu bei, dass die Inzidenzzahlen niedriger geblieben sind, als sie bei geschlossenen Schulen gewesen wären. Die obligatorischen...

We investigate the impact of early-life medical interventions on low-risk newborn health. A policy rule in The Netherlands creates large discontinuities in medical treatments at gestational week 37. Using a regression discontinuity design, we find no health benefits from additional treatments...

Many developed countries have recently experienced sharp increases in home birth rates. This paper investigates the impact of home births on the health of low-risk newborns using data from the Netherlands, the only developed country where home births are widespread. To account for endogeneity in...

A large empirical literature in behavioral economics investigates heterogeneity across individuals and groups in preferences for competition. In this study, we provide a more detailed view on competitiveness by differentiating between four different motivations for entering competitions –...

We use Dutch register data to document the understudied phenomenon of teacher segregation. We show that teachers in primary and secondary schools in the four largest cities of the country – Amsterdam, Rotterdam, The Hague and Utrecht – are segregated in terms of their migration and social...

We combine data from the Amsterdam secondary-school match with register data and survey data to estimate the effects of not being assigned to one's first-ranked school on academic outcomes and on a wide range of other outcomes. For identification we use that secondary-school assignment in...