sensitive children from detailed Danish register data: children with divorced parents, children with parents convicted of crime … emotionally sensitive children in the school-cohort. We exploit that some children move between schools and thus generate …, and children with a psychiatric diagnosis. We find that adding potentially disruptive children lowers the academic …

We propose a theory of social interactions based on self-selection and comparative advantage. In our model, students … public school students in Houston. The experimental results suggest that social interactions are mediated by self …

We propose a theory of social interactions based on self-selection and comparative advantage. In our model, students … public school students in Houston. The experimental results suggest that social interactions are mediated by self …

employ data from the universe of children born in Florida between 1994 and 2002 and in Denmark between 1990 and 2001, which …