This is rather more 'scientific' than the Harriet Carter waist extender 
technology!

>>>>>>>>>>>>>>>>>>>>>>>
American Journal of Preventive Medicine - September 2006, Volume 31, Issue 
3, Pages 240-243.

Ice Cream Illusions

Bowls, Spoons, and Self-Served Portion Sizes

Brian Wansink PhDa, , , Koert van Ittersum PhDb and James E. Painter PhDc
Department of Applied Economics and Management, Cornell University, Ithaca,
New York, Department of Family and Consumer Science, Georgia Institute of
Technology, Atlanta, Georgia, cCollege of Management, Eastern Illinois
University, Charleston, Illinois

Background: Because people eat most of what they serve themselves, any
contextual cues that lead them to over-serve should lead them to over-eat.
In building on the size-contrast illusion, this research examines whether
the size of a bowl or serving spoon unknowingly biases how much a person
serves and eats. Recent discoveries show that people pour more into short,
wide glasses than into tall, narrow glasses, but they believe they have done
the opposite.

Results Even when nutrition experts were given a larger bowl, they served
themselves 31.0% more (6.25 vs 4.77 oz, F(1, 80)=8.05, p <0.01) without
being aware of it. Their servings increased by 14.5% when they were given a
larger serving spoon (5.77 vs 5.04 oz, F(1, 80)=2.70, p =0.10).

Conclusions: People could try using the size of their bowls and possibly
serving spoons to help them better control how much they consume. Those
interested in losing weight should use smaller bowls and spoons, while those
needing to gain weight-such as the undernourished or aged-could be
encouraged to use larger ones.

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