This study analyses the effects of regular physical education at school on cognitive skills, non-cognitive skills, motor skills, physical activity, and health. It is based on a very informative data set, the German Motorik-Modul, and identifies the effect by using variation in the required...

There is continuing debate about what explains cooperation and self-sacrifice in nature and in particular in humans. This paper suggests a new way to think about this famous problem. I argue that, for an evolutionary biologist as well as a quantitative social scientist, the triangle of two...

We investigate to what extent crowd support contributes to the home advantage in soccer, disentangling this effect from other mechanisms such as players' familiarity with the stadium and travel fatigue. To evaluate the relevance of crowd support in determining home advantage we analyze...

While existing research supports that participation in high-school athletics is associated with better education and labour-market outcomes, the mechanisms through which these benefits accrue are not well established. We use data from a large public-school district to retrieve an estimate of the...

Student absences are a potentially important, yet understudied, input in the educational process. Using longitudinal data from a nationally-representative survey and rich administrative records from North Carolina, we investigate the relationship between student absences and academic...

The Covid-19 pandemic has induced worldwide natural experiments on the effects of crowds. We exploit one of these experiments currently taking place over several countries in almost identical settings: professional football matches played behind closed doors. We find large and statistically...