How do pandemics affect for-profit and not-for-profit organizations differently? To address this question, we analyze optimal lockdowns in a two-sector continuous-time individual-based mean-field epidemiological model. We uncover a unique solution that depends on network structure, lockdown...

This paper investigates the determinants of school friendship networks among adolescents, proposing a model of network formation and estimating it using a sample (CILS4EU) of about 10,000 secondary school students in four countries: England, Germany, the Netherlands and Sweden. We test the idea...

Academic consensus about normative prescriptions on the ethnic and cultural composition of societies has been shifting in recent decades. It has evolved from what seemed desirable but was acknowledged to be unrealistic (the noble idea of a melting pot), to what is realistic because it has...

This paper studies the social and economic responses to the COVID-19 pandemic in a large sample of countries. I stress, in particular, the importance of countries' interconnections to understand the spread of the virus. I estimate a Global VAR model and exploit a dataset on existing social...

How do political preferences and voting behaviors respond to information coming from abroad? Focusing on the international migration network, I document that opinion changes at the origins spill over to 1st- and 2nd-generation immigrants abroad. Local diasporas, social media, and family ties to...

An enduring question in education is whether team-based peer learning methods help improve learning outcomes among students. We randomly assign around 10,000 middle school students in Karnataka, India, to alternative peer learning treatments in Math and English that vary the intensity of...

Estimating the effect of ethnic capital on human capital investment decisions is complicated by the endogeneity of immigrants' location choice, unobserved local correlates and the reflection problem. We exploit the institutional setting of a rare immigrant settlement policy in Germany, that...