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Green goods: are they good or bad news for the environment? evidence from a laboratory experiment on impure public goods

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Bibliographic Details
Summary: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 impure public goods affects pro-social behaviour. We set parameters, such that from a theoretical point of view the presence of the impure public good is behaviourally irrelevant. In a baseline setting, where the impure public good provides only small contributions to the public good, we observe that on aggregate pro-social behaviour, defined as total contributions to the public good, is lower in the presence of the impure good. Some individuals do not alter their decisions, but roughly two fifths of subjects make a lower contribution to the public good in the presence of the impure public good. On the contrary, in the case where the impure public good favours the public good component at the expense of private earnings, individuals are unaffected in their behaviour. We conclude that the presence of green goods which have only a small environmental component may reduce pro-environmental behaviour.
Main Authors:Munro, Alistair
Other Authors:Valente, Marieta
Subject:Green goods Impure public goods Pro-social behaviour Social norms Experimental economics
Year:2008
Country:Portugal
Document type:working paper
Access type:open access
Associated institution:Universidade do Minho
Language:English
Origin:RepositóriUM - Universidade do Minho
Description
Summary: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 impure public goods affects pro-social behaviour. We set parameters, such that from a theoretical point of view the presence of the impure public good is behaviourally irrelevant. In a baseline setting, where the impure public good provides only small contributions to the public good, we observe that on aggregate pro-social behaviour, defined as total contributions to the public good, is lower in the presence of the impure good. Some individuals do not alter their decisions, but roughly two fifths of subjects make a lower contribution to the public good in the presence of the impure public good. On the contrary, in the case where the impure public good favours the public good component at the expense of private earnings, individuals are unaffected in their behaviour. We conclude that the presence of green goods which have only a small environmental component may reduce pro-environmental behaviour.

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