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the claim

Willpower is a limited resource.

the verdict
CONTESTED PARTIAL
Recorded sources
4 sources for · 3 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Willpower is a limited resource?

Partly. Peer-reviewed work is split: some papers describe and defend the limited-resource/ego-depletion model, while others report that depletion depends on people's beliefs about willpower rather than true resource depletion. A self-help book and a handbook restate the limited-resource idea, but the research itself remains contested.

Verdict: CONTESTED PARTIAL · 4 sources for, 3 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 4
2013
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author, R. F. (. p. (2013). Willpower for dummies. archive.org. https://archive.org/details/willpowerfordumm0000ryan

Evidence against · 3
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Autonomous Goal Striving Promotes a Nonlimited Theory About Willpower. (n.d.). cir.nii.ac.jp. https://doi.org/10.1177/0146167218820921

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More for · 3
2016
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Cunningham, M. R. & Baumeister, R. F. (2016). How to Make Nothing Out of Something: Analyses of the Impact of Study Sampling and Statistical Interpretation in Misleading Meta-Analytic Conclusions. doi.org. https://doi.org/10.3389/fpsyg.2016.01639

2017
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Ridder, D. d., Adriaanse, M., & Fujita, K. (2017). Routledge International Handbook of Self-Control in Health and Well-Being. play.google.com. https://play.google.com/store/books/details?id=AWQ-DwAAQBAJ&source=gbs_api

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Ego depletion - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Ego_depletion

More against · 2
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Ego Depletion—Is It All in Your Head?. (n.d.). cir.nii.ac.jp. https://doi.org/10.1177/0956797610384745

2011
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Ego depletion--is it all in your head? implicit theories about willpower affect self-regulation.. (2011). pubmed.ncbi.nlm.nih.gov. https://pubmed.ncbi.nlm.nih.gov/20876879

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