Date Added: Jul 2011
Policymakers are increasingly using norm-based messages to influence individual decision-making. The authors partner with a metropolitan water utility to implement a natural field experiment examining the effect of such messages on residential water demand. The data, drawn from more than 100,000 households, indicate that social comparison messages had a greater influence on behavior than simple pro-social messages or technical information alone. Moreover, their data suggest social comparison messages are most effective among households identified as the least price sensitive: high-users. Yet the effectiveness of such messages wanes over time.