Don’t believe that “willpower is like a muscle that runs out after use”
The popular idea is that after doing something that requires self‑control, it becomes harder to resist temptations later, so we should “save” our willpower. Yet 23 laboratories and 2,141 participants ran the same experiment, and the results showed almost no effect. Stop using “I’ve run out of willpower today” as an excuse, and don’t spend money on courses that promise to help you conserve it.
No cost at all. Only a change in wording is needed.
In a multi‑lab preregistered replication study, 23 labs with 2,141 participants followed Sripada et al.’s stan…
No cost at all. Only a change in wording is needed.
In a multi‑lab preregistered replication study, 23 labs with 2,141 participants followed Sripada et al.’s standard protocol: first they performed a task demanding self‑control, then a second similar task. The pooled data indicated a very small self‑control depletion effect; its 95% confidence interval included zero (d = 0.04, 95% CI −0.07 to 0.15). This evidence challenges the model that self‑control is a limited resource.
Hagger MS, Chatzisarantis NLD, Alberts H, et al. (2016). A Multilab Preregistered Replication of the Ego-Depletion Effect. Perspectives on Psychological Science, 11(4), 546–573. https://doi.org/10.1177/1745691616652873
Open source linkThis finding refutes the notion that self‑control is a finite resource, not that people can’t get tired. Lack of sleep or prolonged work does reduce efficiency, but that is handled in Section 3 on sleep and working hours. What random trials actually support are environmental tweaks and simpler wording — see Section 4, items 10 (“move unwanted items out of reach”) and 1 (“write down exactly when, where, and what you’ll do”). While other items in this section deal with monetary cost, this one concerns time and mental effort, which are not interchangeable.