The rational choice model of voluntary public good provision predicts that an individual's contribution to climate change mitigation responds negatively to larger contributions by others whereas social norm theory maintains that one's own contribution is positively related to that of others....

Environmental policies are increasingly informed by behavioral economics insights. 'Green nudges' in particular have been suggested as a promising new tool to encourage consumers to act in an environmentally responsible way, such as choosing renewable energy sources or saving energy. While there...