Do you know how much you eat?

[The researcher] rigged up half the soup bowls on a table with hidden hoses attached to them through a hole in the bowl. As people ate the soup, the hoses kept filling the bowls with more soup. After the study, the people with the bottomless soup bowls estimated they ate the same amount as the people eating from the regular bowls. In reality, they ate an average of 73 percent (and 113 calories!) more.

Read the whole story at University of Nebraska, Food Reflections.