If you're the sort of person who finishes every bit of food on your plate, even when you're aware that you're eating too much, then this is an idea you might get behind.
A new study in the journal Health Affairs shows that when given the option, some people are actually willing to "downsize" their fast food side dish portions -- even when they have to pay the same amount as the full-size portion.
"Culturally, Americans do not respond to the cue of 'feeling full,'" Schwartz told ABC News. "The cue to stop eating is only when the plate is empty."
The study suggests that a person may pick a smaller portion size if they're given the option, especially since they won't have to sacrifice being able to eat what they want to eat, Schwartz told ABC News.