Nudging plant-based alternatives to meat and dairy in a real-life online supermarket: A randomized controlled trial.

A shift from predominantly animal-based to plant-based consumption can benefit both planetary and public health. Nudging may help to promote such a shift. This study investigated nudge effects on plant-based alternatives to meat and dairy in an online supermarket.

How perceptions of meat consumption norms differ across contexts and meat consumer groups.

Social norm perceptions are implicit standards describing what is typically done or seen as acceptable and have shown to be important both in sustaining meat consumption as well as facilitating meat reduction. Norm perceptions depend on individual differences and the contexts (e.g.

Experts' perceptions on motivators and barriers of healthy and sustainable dietary behaviors among adolescents: The SWITCH project.

The interplay of influences shaping dietary behaviors of adolescents needs to be well-understood to develop effective strategies stimulating healthy and sustainable behaviors. This study aimed to identify the most relevant, urgent, changeable and effective motivators and barriers of healthy and sustainable dietary behaviors among adolescents (10-19 years), as perceived by an inter- and transdisciplinary expert panel. Experts working in practice (N = 19) and academia (N = 13) - in the field of sustainability, health, nutrition and/or education - participated in this exploratory mixed-methods study.

Exposure to images showing (non)adherence to physical distancing rules: Effect on adherence behavior and perceived social norms.

Introduction: Adherence to behavioral measures such as physical distancing are key to mitigating the effects of viral pandemics such as the COVID-19 pandemic. Adherence depends in part on people's perception of what others do (descriptive norms) or approve of (injunctive norms). This study examines the effects that exposure to images depicting people following or breaking physical distancing rules have on perceptions of descriptive and injunctive norms and subsequent adherence behavior.

Served Portion Sizes Affect Later Food Intake Through Social Consumption Norms.

Portion sizes of commercially available foods have increased, and there is evidence that exposure to portion sizes recalibrates what is perceived as 'normal' and subsequently, how much food is selected and consumed. The present study aims to explore the role of social (descriptive and injunctive) and personal portion size norms in this effect. Across two experiments, participants were either visually exposed to (Study 1, = 329) or actually served (Study 2, = 132) a smaller or larger than normal food portion.

Identifying social norms in physical aspects of food environments: A photo study.

It is widely accepted that physical food environments can contribute to unhealthy eating, but less is known about how physical cues in these environments actually stimulate eating. Our study starts from the assumption that social norms are embedded in physical cues and aims to make an inventory of physical cues that communicate what is socially accepted as normal and/or appropriate to eat in a Dutch outside-the-home food context. In Study 1, we conducted a qualitative study in which photographs taken in self-service food environments were analyzed using strategies from photo documentation and semiology.

Self-crafting vegetable snacks: testing the IKEA-effect in children.

Purpose: The purpose of this paper is to test whether the IKEA-effect (Norton , 2012) - better liking for self-crafted products than for identical products crafted by others - can be exploited to increase liking and consumption of vegetable snacks in children.

Design/methodology/approach: A between-subjects experiment was conducted at an after school care facility. In total, 86 children aged four to six either crafted a peacock with vegetables or with non-food objects following an example.