The Big Gulp is the new Public Enemy Number 1. The mayors of New York and Cambridge, the American Medical Association, and the Harvard School of Public Health have begun an assault on sugary drinks, particularly large servings of soda.
When we eat out of bigger containers or plates, we don’t notice that we’re eating more. That’s why, in one study, people ate more stale two-week-old popcorn when it was served in a big bucket compared to a small one. In another study, they ate 73% more soup when the bowl was secretly refilled, without feeling any fuller.