Fatas, Enrique, Hargreaves-Heap, Shaun P. and Rojo Arjona, David (2018) Preference conformism: An experiment. European Economic Review, 105. pp. 71-82. ISSN 0014-2921

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Abstract

This paper reports on an experiment designed to test whether people's preferences change to become more alike. Such preference conformism would be worrying for an economics that takes individual preferences as given (‘de gustibus es non disputandum’). So the test is important. But it is also difficult. People can behave alike for many reasons and the key to the design of our test, therefore, is the control of the other possible reasons for observing apparent peer effects. We find evidence of preference conformism in the aggregate and at the individual level (where there is heterogeneity). It appears also to be more consistent with Festinger's epistemic account of why it might occur than that of Social Identity Theory.

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