When encouraged to eat their fill of M&M's, people ate more when given a large rather than a small serving spoon. This most clearly reflects

Question

Quizplus · Accepted Answer

This phenomenon is known as the unit bias, where people tend to consume all of a given unit of food, regardless of its actual size or amount. In this case, the larger spoon led people to take larger units of M&M's, causing them to eat more overall.

When Encouraged to Eat Their Fill of M&M's, People Ate