The study was conducted in collaboration with eight supermarkets from two of the largest Swedish supermarket chains. The stores provided the natural environment in which to conduct an experiment using real shoppers and real purchases, without shoppers being aware of the study. Four different interventions (different price displays) were designed, based on insights from behavioural science. These signs were tested in a randomised controlled study for two common and perishable vegetables – cucumbers and broccoli. Over two weeks, the participating stores randomly set up one of the displays at a time, while keeping the prices the same. The research team collected sales data to measure actual shopping behaviour and additional survey data to measure food waste during the experimental period.