Nathan Carruth
Psychologist whose preregistered replication removed the best-known rescue of the ego depletion effect.
Who they are
The paper's author line gives Nicholas P. Carruth, with Jairo A. Ramos and Akira Miyake. This page is filed under a different first name and the record needs correcting.
The target was Job, Dweck and Walton's 2010 finding that depletion occurs only in people who believe willpower is limited, whose original study had sixty participants.
Key papers
- Carruth, N. P., Ramos, J. A., & Miyake, A. (2023). Does willpower mindset really moderate the ego-depletion effect? A preregistered replication of Job, Dweck, and Walton (2010). PLoS ONE, 18(6), e0287911.
Key ideas
The replication used 187 participants with methodological improvements and kept the original design.
Despite extensive analyses, neither a significant main effect of ego depletion nor a significant moderation by willpower mindset appeared.
Taken with other recent failures, the authors conclude that the claim that a person's view of willpower affects their susceptibility to depletion is in doubt.