Does positive feedback of social impact motivate prosocial behavior? A field experiment with blood donors

Positive feedback about the outcome of volunteers’ prosocial actions is often thought to help motivate continued volunteers’ engagement. In the context of blood donations, various collection systems have begun to provide blood donors feedback on successful utilization of their blood donation. An experiment conducted by the main NGO that supports the collection of blood in Italy studies how such feedback affects subsequent blood donations. From a...