The credible identification of endogenous peer group effects - i.e. social multiplier or feedback effects - has long eluded social scientists. We argue that such effects are most credibly identified by a randomly assigned social program which operates at differing intensities within and between...

This paper evaluates how sharing a kindergarten classroom with low-achieving repeaters affects the long-term educational performance of regular first-time kindergarten students. Exploiting random assignment of teachers and students to classes in Project STAR, I document three sets of causal...

This paper establishes a new fact about educational production: ordinal academic rank during primary school has lasting impacts on secondary school achievement that are independent of underlying ability. Using data on the universe of English school students, we exploit naturally occurring...

This paper provides evidence of a novel facet of peer effects by showing how peer personality affects educational achievement. We exploit random assignment of students to university sections and find that students perform better in the presence of more persistent peers and more risk-averse...

The US teaching force remains disproportionately white while the student body grows more diverse. It is therefore important to understand how and under what conditions white teachers learn racial competency. This study applies a mixed-methods approach to investigate the hypothesis that Black...

This study aims at estimating the stigma effect of unemployment and overeducation within one framework. To this end, we conduct a field experiment in the Belgian labour market. We send out trios of fictitious male job applications to real vacancies. These applications differ only by the labour...

Previous empirical studies have shown that solo entrepreneurs benefit from having balanced skills: Jacks-of-All-Trades (JATs) are better entrepreneurs than specialists are. Nowadays however, the majority of entrepreneurs start up and run ventures together in teams. In this paper we test whether...

We study the long-term effects of a randomized intervention targeting children's socio-emotional skills. The classroom-based intervention for primary school children has positive impacts that persist for over a decade. Treated children become more likely to complete academic high school and...

We study the long-term effects of a randomized intervention targeting children's socio-emotional skills. The classroom-based intervention for primary school children has positive impacts that persist for over a decade. Treated children become more likely to complete academic high school and...

This study aims at estimating the stigma effect of unemployment and overeducation within one framework. To this end, we conduct a field experiment in the Belgian labour market. We send out trios of fictitious male job applications to real vacancies. These applications differ only by the labour...