Originally published November 23 2003
People are fooled by beverage portion sizes based on the shape of the glass
by Mike Adams, NaturalNews Editor
Humans are easily fooled about portion size, it seems: a tall, thin glass seems "fuller" than a short, wide glass, even when they hold the same amount of liquid. Fast food and soft drink companies, no doubt, will be paying close attention to this research.
- They will pour more into short wide glasses than into tall slender
glasses, but perceive the opposite to be true.
- The delusion of shape even influences experienced bartenders, though
to a lesser degree, a researcher at the University of Illinois at
Urbana-Champaign has found.
- Yet research examining the effects of shape on how people determine
how much they consume is limited, said Brian Wansink, a professor of
marketing and nutritional science at Illinois.
- Upon entering the cafeteria line for breakfast on the ninth day, the
campers were randomly given a tall and short glass of identical capacity
in which to pour their orange juice.
- The teenagers poured 76.4 percent more orange juice in the short, wide
glasses than in the tall glasses (9.7 ounces versus 5.5 ounces).
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