Other measures
After providing consent, participants were asked to guess the aim of the study. Guesses relating to kcals/calorie information on food choice or food price on food choice were coded as correctly guessed. Aim guessing was coded independently by two authors (AF, RM) and inconsistencies were resolved through discussion or consultation with another author (ER) where necessary (n = 8). Finally, participants were asked questions relating to the representativeness of the virtual app, the typicality of their orders, whether they believed they were influenced by the calorie content or the price of the foods, whether they supported calorie labelling and proportional pricing interventions in the out-of-home food sector, and if they believed either intervention would be successful in helping people to make healthier choices. Throughout the course of the study, there were three attention checks. If any participant failed one of the three attention checks (e.g. How many times have you visited the planet Mars?), their data were excluded from all analyses.