The "bottomless bowl" study described in your textbook is one example of creative ways researchers have investigated the factors that influence how much we eat.Describe this study,the results,and what concept can explain the results.

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The Answer is A good answer will include the following key points.
- Volunteers were asked to eat soup until they had enough.
- In the experimental condition,a tube continued to fill the soup bowl from the bottom so that it could not be detected by the volunteers.
- The individuals in the experimental group stopped eating after consuming,on average,over 70% more than those participants who knowingly refilled their bowls.
- Despite eating more food,these participants did not feel any more satiated,nor did they believe they had eaten any more than the individuals in the control group.
- Unit bias,the tendency to assume that the unit of sale or portioning is an appropriate amount to consume,helps to explain the results of this experiment.Individuals tend to consume whatever the unit of food is,despite the actual size (e.g. ,if a 'single serving' is large,people will consume the entire thing even if it's substantially larger than a 'healthy' portion).

The "Bottomless Bowl" Study Described in Your Textbook Is One