Agreed that it’s hard to implement: much easier to say “vegetarian food is popular at this cafe!′ than to convince people that they are expected to eat vegetarian.
See here for a review of the ‘dynamic norms’ part of this literature (studies that tell people that vegetarianism is growing in popularity over time): https://​​osf.io/​​preprints/​​psyarxiv/​​qfn6y
Agreed that it’s hard to implement: much easier to say “vegetarian food is popular at this cafe!′ than to convince people that they are expected to eat vegetarian.
See here for a review of the ‘dynamic norms’ part of this literature (studies that tell people that vegetarianism is growing in popularity over time): https://​​osf.io/​​preprints/​​psyarxiv/​​qfn6y