An interventional study of Neutral Control Condition and Food-based Control Condition in Eating Behaviour, sponsored by University of Birmingham. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2015-12-01.
Sponsored by University of Birmingham · Not applicable and Interventional
Encouraging individuals to eat vegetables is difficult. However, recent evidence suggests that using social-based information might help. For instance, it has been shown that if people think that others are eating lots of fruit and vegetables, that they will consume more of these foods to match the 'norm'. The purpose of this study was to determine whether a liking social norm (information about how much others like vegetables) would be effective at encouraging people to eat more vegetables and to examine whether these effects are sustained beyond initial exposure (i.e. whether the effect of the norm persists on food selection 24 hours alter).
Using a 2 x 5 x 2 experimental design we investigated the effects of exposure to various messages on later food intake and whether any effects were sustained 24 hours after exposure in both low and high consumers of vegetables. There were three factors of delay (immediate food selection versus food selection 24 hours after exposure), message type (liking norm, descriptive norm, health message, food-based control, and neutral control message) and habitual consumption (low versus high). The buffet consisted of three raw vegetables, three energy-dense foods and two dips.
In this study the investigators hypothesised that a liking norm would increase the consumption of vegetables (compared to a neutral control condition) and that the effect would persist on vegetable consumption 24 hours after intital exposure to the liking norm.
University of Birmingham is the lead sponsor of 179 studies on the registry; 30 are open to participants now.
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Exclusion Criteria:
Message about age of University of Birmingham
Behavioral: Neutral Control Condition
Message about variety of vegetables in the world
Behavioral: Food-based Control Condition
Message about the health benefits of eating vegetables
Behavioral: Health Condition
Message suggesting most people eat plenty of vegetables
Behavioral: Descriptive Social Norm
Message suggesting most people like eating vegetables
Behavioral: Liking Social Norm
Message about age of University of Birmingham
Message about variety of vegetables in the world
Message about the health benefits of eating vegetables
Message suggesting most people eat plenty of vegetables
Message suggesting most people like eating vegetables
Grams of vegetables consumed
Time frame: 8 months
This study is completed, as verified in Nov 2015. You cannot join it, but the record below documents what was studied.
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University of Birmingham