Pledging after nudging improves uptake of plant-based diets: A field experiment in a German university cafeteria

We design and administer a novel randomised controlled trial in a German university cafeteria, lasting for five weeks (N_Participants=129, N_Meals=645). In week 1, we measure baseline dietary behaviours. In week 2, we introduce a labelling nudge in the cafeteria. Subsequently, in weeks 3 & 4, we assign participants randomly to three experimental conditions: a control group that continues to receive the labelling nudge and two treatment groups that get the labelling nudge with an opportunity to reflect, either on the nudge (nudge+ 1) or their own preferences (nudge+ 2). All treatments are discontinued in week 5. This dataset presents this data along with the do files needed for execution.