In the past 10 years, there has been an explosion of well-identified studies that measure
peer effects across many settings and for many outcomes. The emphasis on natural …

We study how health behaviors are shaped through family spillovers. We leverage
administrative data to identify the effects of health shocks on family members' consumption …

Financial incentives have shown strong positive short-run effects for problematic health
behaviors that likely stem from time inconsistency. However, the effects often disappear …

Why has fact-checking spread so quickly within US political journalism? In the first field
experiment conducted among reporters, we varied journalist exposure to messages that …

There have been numerous studies on peer effects. But inadequate attention has been paid
to making valid causal inference about peer effects, either due to intellectual negligence or …

We formalize the optimal design of experiments when there is interference between units,
that is, an individual's outcome depends on the outcomes of others in her group. We focus …

Agricultural technologies typically spread as farmers learn about profitability through social
networks. This process can be nuanced, however, when net returns for some farmers may …

This paper estimates social effects of incentivizing people in teams. In three field
experiments featuring exogenous team formation and opportunities for repeated social …

Economic incentives are a promising approach for improving health behavior but have been
limited by their short-lived benefits. In this manuscript, we examine whether coupling …

We introduce group cohesion to study the economic relevance of social relationships in
team production. We operationalize measurement of group cohesion, adapting the “oneness …