How to set rewards that actually motivate kids (according to research)
The science of intrinsic vs extrinsic motivation in plain English, plus a practical framework for picking rewards that don't backfire on the behavior you're trying to encourage.
Most parenting advice on rewards is either “never use them, they ruin intrinsic motivation” or “give a sticker for everything.” Neither matches the more nuanced picture the research generally points to. The short version: rewards tend to work for the right behaviors, in the right shape, at the right time. Get any of those wrong and you’ll spend money to make your kid less motivated than before.
The thing nobody tells you about rewards: the overjustification effect
In the early 1970s, Lepper, Greene, and Nisbett ran the now-classic “magic markers” study. Kids who already loved drawing were promised a reward for drawing, and afterward, they drew less on their own than kids who got no reward at all. The reward replaced the internal motivation instead of adding to it.
Takeaway: never reward something your kid already does for fun. You’ll cost yourself money and the behavior.
When rewards work: the four conditions
Decades of follow-up work (see references at the bottom for the names worth knowing) point at four conditions where extrinsic rewards tend to help rather than hurt:
- The task is genuinely uninteresting. Folding laundry, taking out trash, brushing teeth at age 5: boring tasks need a nudge.
- The reward is unexpected, or tied to a clear standard. “If you get all your reading minutes this week, you earn X” beats “you’ll get a treat for reading.”
- The reward is meaningful but small. Big rewards crowd out the behavior the moment they stop. Small rewards fade gracefully.
- You praise the effort, not the trait. In Mueller and Dweck’s 1998 studies, fifth-graders praised for intelligence (“you must be smart at these problems”) later showed less persistence and worse performance after failure than kids praised for effort (“you must have worked hard”). The popular framing is in Carol Dweck’s Mindset (2006); the empirical core is the 1998 paper, with the usual caveats about how the effect plays out in real classrooms vs lab settings.
A simple framework: the four-quadrant test
Before you set a reward for any behavior, ask:
| Kid already enjoys it | Kid resists it | |
|---|---|---|
| Easy to do | Don’t reward. Praise it. | Small, predictable reward. Habit formation. |
| Hard to do | Praise the effort. Reward only milestones. | Bigger reward, milestone-based. Climbing K-2 reading, learning to ride a bike. |
What about money vs points vs treats?
- Money teaches a real-world transaction model. Useful, but watch for crowding out on tasks you want them to do as family contribution.
- Points (the Kinhold approach) buy the flexibility of money without immediate cash flow, and let you set redemption ratios that adjust over time.
- Treats are immediate but lose power fast and can create food-reward associations you may not want.
A balanced system uses all three for different categories. (We go deep on calibrating point values in How to size points without going broke.)
Five rules of thumb that survive the research
- Don’t reward what they already love.
- Reward effort and process, not outcome or innate ability.
- Make the reward small and the behavior specific.
- Phase rewards out as habits stick.
- Use natural consequences when you can; they’re free and they generalize.
Putting it into practice this week
Pick one behavior you’ve been nagging about. Run it through the four-quadrant test, set a small predictable reward, and review in two weeks. If the behavior sticks even after you stop the reward, you got it right.
References
- Lepper, M. R., Greene, D., & Nisbett, R. E. (1973). Undermining children’s intrinsic interest with extrinsic reward: A test of the “overjustification” hypothesis. Journal of Personality and Social Psychology, 28(1), 129–137.
- Deci, E. L., Koestner, R., & Ryan, R. M. (1999). A meta-analytic review of experiments examining the effects of extrinsic rewards on intrinsic motivation. Psychological Bulletin, 125(6), 627–668.
- Cameron, J., & Pierce, W. D. (1994). Reinforcement, reward, and intrinsic motivation: A meta-analysis. Review of Educational Research, 64(3), 363–423.
- Mueller, C. M., & Dweck, C. S. (1998). Praise for intelligence can undermine children’s motivation and performance. Journal of Personality and Social Psychology, 75(1), 33–52.
- Dweck, C. S. (2006). Mindset: The New Psychology of Success. Random House.
- Ryan, R. M., & Deci, E. L. (2000). Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being. American Psychologist, 55(1), 68–78.
