Gentle purchase incentives can lead customers to choose groceries with higher animal husbandry standards more often. A recent study at the University of Bonn at least suggests this. The researchers used two different animal welfare label posters as "nudges." Each poster changed the consumer behavior of participants shopping in a virtual supermarket. The share of products with higher animal welfare standards in the shopping cart was highest when both posters were combined. Further studies have yet to clarify the extent to which the results can be transferred to real shopping situations.