AAAS staff share the first time they asked questions about the world, and started to think like a scientist or an engineer.

The fleeting thought of a candy bar is often enough to inspire a powerful sweet tooth. But if people go through the motions of devouring an entire candy bar in their mind’s eye—imagining each and every repetitive bite, chew, and swallow—then they would likely consume less of an actual candy bar if they had the chance to eat one, new research suggests.