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Social & Emotional InfluenceMember ingredient
Overjustification Effect
Some expected rewards can reduce later freely chosen engagement in an activity that was already interesting, but effects depend on the reward, task and measure.
Public evidence overview
One checked source, with its limits.
This preview is not the complete evidence base. Use it as a question to investigate in your own product, not as a prediction of what an individual will do.
Checked source previewAcademic paper
Intrinsic Motivation and Extrinsic Incentives Jointly Predict Performance: A 40-Year Meta-Analysis
Research-assisted source review
- What it supports
- Intrinsic motivation was a moderate-to-strong performance predictor, especially for quality, while incentives better predicted quantity; both could predict performance jointly.
- Where it may not transfer
- Mostly correlational performance evidence cannot identify reward-caused changes in intrinsic motivation. Measures, settings and incentive contingencies were heterogeneous.
See how sources and limitations are checked in our editorial method.
Member depth
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Seen in real products
How teams put it to work.
Examples identified in our interface teardowns, linked back to the full product journey.
