This paper investigates the effects of school starting age on crime while relying on variation in school starting age induced by administrative rules; we exploit that Danish children typically start first grade in the calendar year they turn seven, which gives rise to a discontinuity in...

This paper estimates how peers’ achievement gains are affected by the presence of potentially disruptive and emotionally sensitive children in the school-cohort. We exploit that some children move between schools and thus generate variation in peer composition in the receiving school-cohort....

This paper investigates pre-teenage effects of the choice of type of non-parental child care at age three (preschool relative to more informal family day care). We exploit a Danish panel data child survey merged with administrative records along with a pseudo-experiment that generates variation...

This paper uses Danish register-based data for the population of children born in 1990-1997 to investigate the effects on parents of having a child with attention-deficit/hyperactivity-disorder (ADHD). Ten years after birth, parents of children diagnosed with ADHD have a 75% higher probability...

We are the first to investigate longer-term effects of pharmacological treatment of ADHD on children's health. We rely on a difference-in-differences strategy while exploiting Danish register-based panel data for children born in 1990-1999. We study effects of treatment initiated between ages...

Bullying is a widespread social phenomenon. We show that both children who are being bullied and children who bully suffer in terms of long-term outcomes. We rely on rich survey and register-based data for children born in a region of Denmark during 1990-1992, which allows us to carefully...

This paper uses register based data covering the entire population of Danish children enrolled in preschool in 2006-2007 to investigate whether the gender composition of preschool staff members affects the timing of school start and subsequent academic performance. To estimate effects of the...

Exploiting a rich panel data child survey merged with administrative records along with a pseudo-experiment generating variation in the take-up of preschool across municipalities, we provide evidence of the effects on non-cognitive child outcomes of participating in large scale publicly provided...

This paper uses a Danish panel data child survey merged with administrative records along with a pseudo-experiment that generates variation in the take-up of preschool across municipalities to investigate pre-teenage effects of child care participation at age three (either parental care,...

A segregation of the labour market into a family-friendly and a non-family friendly sector has the effect that women self-select into the sectors depending on institutional constraints, preferences for family-friendly working conditions and expected wage differences. We find that neglecting the...