Ego Depletion: The Science of Willpower as a Finite Resource
In 1998, Roy Baumeister gave subjects a plate of radishes and a plate of cookies, then told them to eat only the radishes. Subjects who resisted the cookies subsequently quit on an unsolvable puzzle in 8 minutes. Controls who ate cookies lasted 20 minutes. Self-control, Baumeister argued, depletes a limited resource. The theory, its replication crisis, and what the controversy reveals about the nature of willpower.