beneficiaries of one’s work. In a longitudinal field experiment of fruit harvesters, we find that though beneficiary contact with …

-month large-scale field experiment and a fifteen-month follow-up period, involving more than 10,000 previous donors. We examine … offer of a lottery ticket, on average, increases the probability to donate blood during the experiment by 5.6 percentage … reduction in donations is observed after the experiment. …

conduct a lab-in-the-field experiment in Ghana. In a between-subjects design, participants complete a real-effort task under a …

We conducted a field experiment in the natural setting of blood donations to test how oxytocin relates to empathy and …

artefactual field experiment conducted with 216 villagers from small, rural communities in northern Namibia. In line with previous …