Enhanced Broccoli Consumption After a Liking Norm and Vegetable Variety Message: Effects After a 24 Hour Delay.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 400
- 试验地点
- 1
- 主要终点
- Grams of vegetables consumed
研究概览
简要总结
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).
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Healthy volunteers
- •Sufficiently fluent in English
排除标准
- •Food allergies
- •Past / present depression or anxiety
- •Past / present eating disorder.
研究组 & 干预措施
Neutral Control Condition
Message about age of University of Birmingham
干预措施: Neutral Control Condition (Behavioral)
Food-based Control Condition
Message about variety of vegetables in the world
干预措施: Food-based Control Condition (Behavioral)
Health Condition
Message about the health benefits of eating vegetables
干预措施: Health Condition (Behavioral)
Descriptive Social Norm
Message suggesting most people eat plenty of vegetables
干预措施: Descriptive Social Norm (Behavioral)
Liking Social Norm
Message suggesting most people like eating vegetables
干预措施: Liking Social Norm (Behavioral)
结局指标
主要结局
Grams of vegetables consumed
时间窗: 8 months
次要结局
未报告次要终点