‘Expected satiety’ changes hunger and fullness in the inter-meal interval

Previously, we have shown that foods differ markedly in the satiety that they are expected to confer (compared calorie-for-calorie). In the present study we tested the hypothesis that ‘expected satiety’ plays a causal role in the satiety that is experienced after a food has been consumed. Before lun...

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Bibliographic Details
Published in:Appetite 2011-04, Vol.56 (2), p.310-315
Main Authors: Brunstrom, Jeffrey M., Brown, Steven, Hinton, Elanor C., Rogers, Peter J., Fay, Stephanie H.
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Appetite
Beverages
Biological and medical sciences
Cognition
Energy Intake
Expected satiety
Feeding. Feeding behavior
Female
Food
foods
Fruit
fruits
Fundamental and applied biological sciences. Psychology
Human
Humans
Hunger
ingredients
lunch
Male
Meal size
Medical sciences
Memory
Metabolic diseases
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Satiation
satiety
small fruits
Surveys and Questionnaires
Vertebrates: anatomy and physiology, studies on body, several organs or systems
Weight Loss
Young Adult
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Summary:Previously, we have shown that foods differ markedly in the satiety that they are expected to confer (compared calorie-for-calorie). In the present study we tested the hypothesis that ‘expected satiety’ plays a causal role in the satiety that is experienced after a food has been consumed. Before lunch, participants ( N = 32) were shown the ingredients of a fruit smoothie. Half were shown a small portion of fruit and half were shown a large portion. Participants then assessed the expected satiety of the smoothie and provided appetite ratings, before, and for three hours after its consumption. As anticipated, expected satiety was significantly higher in the ‘large portion’ condition. Moreover, and consistent with our hypothesis, participants reported significantly less hunger and significantly greater fullness in the large-portion condition. Importantly, this effect endured throughout the test period (for three hours). Together, these findings confirm previous reports indicating that beliefs and expectations can have marked effects on satiety and they show that this effect can persist well into the inter-meal interval. Potential explanations are discussed, including the prospect that satiety is moderated by memories of expected satiety that are encoded around the time that a meal is consumed.
ISSN:0195-6663
1095-8304
DOI:10.1016/j.appet.2011.01.002