ArticleFood quality and preference2019
When a portion becomes a norm: Exposure to a smaller vs. larger portion of food affects later food intake.
Article in Food quality and preference, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.
- Downsizing food: a systematic review and meta-analysis examining the effect of reducing served food portion sizes on daily energy intake and body weight.The British journal of nutrition · 2023Pooled it
- Reductions to main meal portion sizes reduce daily energy intake regardless of perceived normality of portion size: a 5 day cross-over laboratory experiment.The international journal of behavioral nutrition and physical activity · 2020Trial
- To Taste or Not to Taste: A Narrative Review of the Effectiveness of Taste and Non-Taste Exposures on the Dietary Intake of Head Start Children.Nutrients · 2025Review
- Impact on beer sales of removing the pint serving size: An A-B-A reversal trial in pubs, bars, and restaurants in England.PLoS medicine · 2024Article
- Impact on sales of adding a smaller serving size of beer and cider in licensed premises: an A-B-A reversal design.BMC public health · 2023Article
- Impact of Sizes of Servings, Glasses and Bottles on Alcohol Consumption: A Narrative Review.Nutrients · 2022Review
- Gender, Age, Hunger, and Body Mass Index as Factors Influencing Portion Size Estimation and Ideal Portion Sizes.Frontiers in psychology · 2022Article
- Trends in Sales and Industry Perspectives of Package Sizes of Carbonates and Confectionery Products.Foods (Basel, Switzerland) · 2021Article
- The influence of front-of-pack portion size images on children's serving and intake of cereal.Pediatric obesity · 2020Article
- Increasing the proportion of healthier foods available with and without reducing portion sizes and energy purchased in worksite cafeterias: protocol for a stepped-wedge randomised controlled trial.BMC public health · 2019Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundPortion sizes in the food environment may communicate information about what constitutes a 'normal' amount of food to eat. Here we examined whether mere visual exposure to a smaller vs. larger portion size of snack food affects perceptions of how much a 'normal' sized portion is and how much people choose to eat of that food in future.
methodsUnder the guise of a study on taste preference and personality, 104 female participants were randomly allocated to be exposed to either a smaller or larger portion size of snack food. Twenty-four hours later participants freely selected a portion of the snack food to consume and reported on their perception of what constituted a normal sized portion of the snack food.
resultsParticipants that were exposed to a smaller, as opposed to larger portion size subsequently believed that a normal portion of the snack food was smaller in size. Exposure to the smaller as opposed to the larger portion size also resulted in participants consuming less snack food the next day.
conclusionsEnvironmental exposure to smaller, as opposed to larger portion sizes of food may change perceptions of what constitutes a normal amount of food to eat and affect the amount of food people choose to eat in future.
Indexed as
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.