Ethical goods are increasingly available in markets for conventional goods giving pro-ethically motivated consumers a convenient option to contribute to public goods. In a previous experiment we explored the behavioural relevance of impure public goods in a within-subject setting and observed...

An impure public good is a commodity that combines public and private characteristics in fixed proportions. Green goods such as dolphin-friendly tuna or green electricity programmes provide increasingly popular examples of impure public goods. We design an experiment to test how the presence of...