Behavioral economists have argued that incentives can backfire. In a field experiment, we distribute “no junk mail” stickers to more than 800 households. We introduce information, monitoring, and rewards in treatments. We do not find evidence of motivation crowding out.

There is a growing interest in collective contracts to address agri-environmental policy goals at landscape scales. Yet, little is known about farmers' general willingness to cooperate. We developed four treatments of a linear public goods game to investigate farmers' willingness to cooperate:...