Neural basis of the undermining effect of monetary reward on intrinsic motivation
Adults / lifelong learning Across ages Motivation and curiosity
Links to claims
Supports (1)
| Claim | Basis |
|---|---|
| C22 | OA fMRI free-choice: performance-based ¥200/success cut voluntary SW plays vs yoked control (F(1,26)=6.59, P=.016; n=28). Supports C22 force; too small for kill-condition bar — not a survival. |
Review state: first-pass draft, pending human review.
Source note
Syntes: Murayama et al. (2010) — performance-based money cut free-choice plays (small fMRI)
Källa: Murayama, K.; Matsumoto, M.; Izuma, K.; Matsumoto, K. (2010). Neural basis of the undermining effect of monetary reward on intrinsic motivation. PNAS 107(49), 20911–20916. https://doi.org/10.1073/pnas.1013305107 (PMC3000299)
Verified content
- [full text] N = 28 adults randomly assigned to reward vs control; stopwatch (SW) task interesting, watch-stop (WS) control.
- [full text] Reward group: ¥200 (~$2.20) per successful SW trial in session 1; control group yoked cash for participation (matched amount, not performance-contingent).
- [full text] After session 1 (and again after session 2 with no performance pay), 3-minute free-choice period: voluntary SW plays fewer in reward group than control — main effect of group F(1,26) = 6.59, P = 0.016; both free-choice periods P < 0.05 (Mann–Whitney U = 52.5 and 54.5).
- [full text] WS voluntary plays ns and rare. Striatum/prefrontal activation tracked the behavioral undermining.
Limits
- [assessment] Small (n = 28); performance-based contingency (not pure "for doing"); scanned lab task; not preregistered; not a meta. Does not meet C22 kill-condition bar ("large preregistered experiment or meta-analysis"). Stored as OA free-choice support, not applied as survive-and-log (would pad the floor).
Why it is in the library
Clean OA free-choice behavioral confirmation of monetary undermining after reward removal. Candidate support for C22 Bounds; future kill-test only if a large/meta opens.
Added 2026-10-27 by the project (extra13). [full text] = read in the full text.
Metadata as recorded
- Titel
- Neural basis of the undermining effect of monetary reward on intrinsic motivation
- Författare
- Kou Murayama; Madoka Matsumoto; Keise Izuma; Kenji Matsumoto
- År
- 2010
- Källa/DOI
- Proceedings of the National Academy of Sciences 107(49):20911–20916. DOI: 10.1073/pnas.1013305107
- URL
- https://doi.org/10.1073/pnas.1013305107
- PMC
- PMC3000299
- Licens
- PNAS author-choice / PMC full text (OA)
- Typ
- experimentell fMRI + free-choice (parallellgrupper)
- Åldersgrupp
- vuxen (college-age scanned sample)
- Teman
- motivation-och-nyfikenhet
- Hämtad
- 2026-10-27
- ID
- MOT-016
- Tier
- RCT
- Obs
- Performance-based monetary reward reduced voluntary SW-task plays in free-choice periods vs yoked-pay control (F(1,26)=6.59, P=0.016; n=28). Not large enough for C22 kill-condition ("large preregistered or meta").
- Köp/flagga
- OA via PMC; full text extracted from PMC HTML 2026-10-27.
The original files (PDF or abstract) are kept in the project archive and are not published here.