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oktober 24, 2003
Storleksbedömningar
I Science Daily-artikeln Shape Of Beverage Glass Influences How Much People Pour And Drink skrivs om våra svårighet att bedöma hur mycket vätska vi häller i ett glas.
Your eyes play tricks. And your brain makes it worse. Both teenagers
and adults misjudge how much they pour into glasses. 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.
How shape can alter a person's notion of size has been widely investigated. For instance, triangles are generally perceived to be larger than squares, and horizontal shapes are seen as smaller than vertical objects of identical volume.
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. To understand the process better, Wansink examined how shape influences teenagers, adults and bartenders who pour beverages into empty glasses.
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There are various policy implications in these findings, according to Wansink. The tricks of the eye and brain could play havoc with dieters seeking to monitor and better control food and beverage consumption.
Lite mer om relevansen för vikthållningen (från Ten Tips for Staying Lean, avsnitt 2: " Shrink your servings", min markering):
When people were served larger portions of lasagna, they ate more than when they were given smaller portions and allowed to get up for more,” says Tufts's McCrory. That's what happened in single-meal studies done decades ago. More recent studies show that when people are given larger amounts of “hedonistic” foods like M&Ms, they eat more than people who are given smaller amounts. “When we gave people big buckets of popcorn—the ones you have to hold with two hands—at a movie theater, they ate 40 to 50 percent more popcorn than people who got smaller buckets,” says Brian Wansink, director of the Food and Brand Research Lab at the University of Illinois at Urbana-Champaign. The only exception: Women on a date ate the same amount of popcorn, regardless of bucket size, he notes. When they were on their own or with friends, though, watch out..
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Posted by hakank at oktober 24, 2003 08:40 FM Posted to Kognitiva illusioner