Social norm nudges in shopping trolleys to promote vegetable purchases : A quasi-experimental study in a supermarket in a deprived urban area in the Netherlands

Background: Supermarkets are a key point of purchase for groceries and can therefore have a considerable influence on eating behaviours. Evidence suggests that descriptive social norm nudges in shopping trolleys can be effective in stimulating vegetable purchases in supermarkets. Objective: We investigated the effect of a combination of two nudging strategies in shopping trolleys – a social norm about vegetable purchases and a designated place to put vegetables – on the amount of vegetables purchased in a supermarket in a deprived urban area in the Netherlands. Design: A quasi-experimental stu... Mehr ...