Normative Prompts Reduce Consumer Food Waste in Restaurants.

Stöckli, Sabrina; Dorn, Michael Hans; Liechti, Stefan (2018). Normative Prompts Reduce Consumer Food Waste in Restaurants. Waste management, 77, pp. 532-536. Elsevier 10.1016/j.wasman.2018.04.047

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This field study demonstrates that prompts reduce food waste in a restaurant. Based on the behavioral change literature, it was hypothesized that (1) informational prompts encourage consumers to reduce food waste, and that (2) an informational prompt with a normative message is more effective than a prompt with only an informative message. The results were mixed. As expected, diners who were exposed to prompts asked to take away their leftovers more frequently than diners who were exposed to no prompts. However, prompts with an informative and normative message were no more powerful than prompts with only an informative message.

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