HoldenSR3 - NATS104 Willott November 1 2006 Citation:...

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NATS104 Willott November 1 2006 Citation: Geier, Andrew B. and P Rozin, and G Doros. A New Heuristic That Helps Explain the Effect of Portion Size on Food Intake. Psychological Science 17 (6) 521-525. Hypothesis: The concept of "unit bias", or that there is a perceived optimal amount of something (measured in units appropriate for the "thing"), is worth considering more fully in human psychology research. Unit bias may be responsible for portion size choice with regard to food, for example. The experiment in the report tries to prove the existence of unit bias through food portion size tests. Methods used to test hypothesis: Three different kinds of food (Tootsie Rolls, pretzels, and M&Ms) were offered free of charge in various public locations. People who visited or otherwise passed through these locations were allowed to take as much of the food as they wanted, though portion size was varied – on some days larger Tootsie Rolls were offered, differing spoon sizes were left for the M&Ms, and pretzels were halved instead of given as whole units. If there is a relevant difference in the
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This note was uploaded on 04/03/2008 for the course NATS 104 taught by Professor Lewis during the Fall '08 term at University of Arizona- Tucson.

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HoldenSR3 - NATS104 Willott November 1 2006 Citation:...

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