Tackling environmental pollution requires a permanent change in regular, repeated behavior of households. Bringing about change in such behavior may require interventions that are not limited to a single point in time, yet little evidence exists on how frequently we need to target households to...

We study how correcting people’s beliefs about social norms and behavioral trends encourages collective action in a setting where the desired behavior is not yet prevalent. In a field experiment among 1,709 subjects, we test whether low sign-up rates for a recycling program in urban Peru can...

This paper shows how creating a strong link between identity and behavior shapes self-perception and induces sustained behavioral change. In a large-scale field experiment to address non-payment for public services, I use messages that establish a link between payment behavior and the identity...