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

Raghoebar, Sanne, Haynes, Ashleigh ORCID: 0000-0002-3616-6673, Robinson, Eric ORCID: 0000-0003-3586-5533, Kleef, Ellen Van and Vet, Emely De (2019) Served Portion Sizes Affect Later Food Intake Through Social Consumption Norms. Nutrients, 11 (12). E2845-.

Text
Sannenutrients-11-02845-v2.pdf - Published version
Download (958kB) | Preview

Official URL: http://dx.doi.org/10.3390/nu11122845

Abstract

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, <i>N</i> = 329) or actually served (Study 2, <i>N</i> = 132) a smaller or larger than normal food portion. After 24 h, participants reported their intended consumption (Study 1) or served themselves and consumed (Study 2) a portion of that food and reported perceived portion size norms. In Study 1, visual exposure to portion size did not significantly affect intended consumption and perceived portion size norms. In Study 2, participants consumed a smaller portion of food when they were served a smaller rather than a larger portion the previous day, which was mediated by perceived descriptive and injunctive social (but not personal) portion size norms. Results suggest that being served (but not mere visual exposure to) smaller (relative to larger) portions changes perceived social norms about portion size and this may reduce future consumption of that food.

Item Type:	Article
Uncontrolled Keywords:	Humans, Feeding Behavior, Food Preferences, Visual Perception, Choice Behavior, Energy Intake, Nutritive Value, Time Factors, Adult, Female, Male, Young Adult, Meals, Portion Size, Social Norms
Depositing User:	Symplectic Admin
Date Deposited:	18 Feb 2020 11:39
Last Modified:	01 Feb 2024 23:31
DOI:	10.3390/nu11122845
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3075537