A Teacher
Roy Baumeister
Willpower as a limited resource (ego depletion)
The transmission
Roy Frederick Baumeister (born May 16, 1953, in Cleveland, Ohio) is an American social psychologist known for influential and prolific work on the self, belonging, self-esteem, free will, and above all self-control. He earned his PhD from Princeton University in 1978 under Edward E.
Jones, and held long appointments at Case Western Reserve University and Florida State University before moving to the University of Queensland. Across hundreds of papers he argued that the human need to belong is a fundamental motivation, and that the capacity for self-regulation is one of the traits most central to a functioning life.
His best-known contribution is the strength model of self-control and the concept of ego depletion: the proposal, developed from the late 1990s, that willpower draws on a limited resource that is temporarily diminished by use, so that exercising self-control on one task leaves less available for the next.
He brought the idea to a wide audience in Willpower: Rediscovering the Greatest Human Strength (2011), co-written with journalist John Tierney, which also argued that self-control, like a muscle, can be strengthened through practice.
Ego depletion was enormously influential, but large preregistered replications have produced weak or null effects, and the size and even existence of the basic effect is now genuinely contested. The durable, careful claim — that self-control is a trainable, consequential capacity — survives the dispute over the depletion mechanism.
What they gave
Self-control as central: Marshaled evidence that the capacity to regulate impulse and direct behavior is among the most consequential predictors of life outcomes.
- The strength model: Proposed that willpower can be both temporarily fatigued and, like a muscle, strengthened over time through repeated practice.
- Ego depletion: Advanced the widely studied (and now contested) claim that acts of self-control draw on a shared, exhaustible resource.
- Honest boundary: The depletion mechanism failed key large-scale replications; what stands is the trainability and importance of self-regulation, not the original energy model.
In their words
Willpower lets us change ourselves and our society in small and large ways.
He and his collaborators discovered that willpower, like a muscle, becomes fatigued from overuse but can also be strengthened over the long term through exercise.
You have a finite amount of willpower that becomes depleted as you use it.
For most of us, though, the problem is not a lack of goals but rather too many of them.
Changing personal behavior to meet standards requires willpower, but willpower without self-awareness is as useless as a cannon commanded by a blind man.
We’ve said that willpower is humans’ greatest strength, but the best strategy is not to rely on it in all situations. Save it for emergencies.
The best way to reduce stress in your life is to stop screwing up.
A rested will is a stronger will.
The line they stand in
Influenced by: His doctoral mentor Edward E. Jones; the social and personality psychology of the self; and the broader research tradition on identity and self-esteem.
- Influenced: The large modern literature on self-regulation and self-control; the behavioral-economic treatment of willpower; and, by way of its failure to replicate, the methodological reckoning of psychology’s replication crisis.
Revelations they taught
Essential Works
- Willpower: Rediscovering the Greatest Human Strength2011