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Updated: Aug 6, 2026
08:02
A Computer Vision System for the Assessment of Ice Cream Melting Behavior
Published on: October 4, 2024
Ice cream illusions bowls, spoons, and self-served portion sizes
Brian Wansink1, Koert van Ittersum, James E Painter
1Department of Applied Economics and Management, Cornell University, Ithaca, New York 14853-7801, USA. Wansink@cornell.edu
American Journal of Preventive Medicine
|August 15, 2006
Summary
Larger bowls and serving spoons unconsciously increase food portions, leading to overeating. Using smaller serving utensils can help control food consumption and manage weight.
Area of Science:
- Behavioral Science
- Food Psychology
- Nutritional Science
Background:
- Portion control is influenced by contextual cues, as individuals consume most of what they serve themselves.
- The size-contrast illusion suggests that serving vessel size can unconsciously bias food portioning and consumption.
Purpose of the Study:
- To investigate if bowl and serving spoon size influence self-served food quantities.
- To determine if individuals are aware of the impact of utensil size on their serving habits.
Main Methods:
- A 2x2 between-subjects design was employed with 85 nutrition experts.
- Participants were randomly assigned to receive either smaller (17 oz) or larger (34 oz) bowls and smaller (2 oz) or larger (3 oz) serving spoons.
- Self-served ice cream portions were weighed after participants completed a survey.
Main Results:
- Nutrition experts served themselves 31.0% more ice cream with larger bowls (p < 0.01).
- Larger serving spoons led to a 14.5% increase in servings (p = 0.10).
- Participants were unaware of the increased consumption due to utensil size.
Conclusions:
- Utilizing smaller bowls and serving spoons can aid in controlling food intake.
- Recommendations are provided for weight management: smaller utensils for weight loss, larger ones for weight gain.
- The findings have implications for understanding eating behaviors and public health strategies.
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