No. 09 Primer
Confetti is not feedback.
Rewards can crowd out the reason to learn, a third of feedback makes things worse, and the most famous motivation idea is a fraction of its reputation.
Pay for the behaviour and you can lose the reason for it.
We only deeply process what we care about. Emotion and cognition aren’t separate systems that occasionally interfere. They are one system. So motivation isn’t the decoration on a learning product. It is the engine. Which makes it worth getting right, and some of the most popular ideas here are weaker than they look.
Rewards can crowd out the reason to learn
Across 128 experiments, tangible rewards lowered people’s own motivation to keep doing a task once the reward was gone. It didn’t much matter what the reward was for.
−0.40
Rewards for taking part
−0.36
Rewards for finishing
−0.28
Rewards for performing well
+0.33
Verbal feedback, no reward
The mechanism is control. A reward that feels like a lever wears away the sense of autonomy that keeps effort going.
This one is contested, honestly. Other reviews find rewards tied directly to performance can work alongside intrinsic motivation. Gamification reviews find small positive effects on average, though they wobble in the most rigorous studies. And one leaderboard-and-badges class ended a semester less motivated and scoring lower than the control. The fair reading isn’t “never reward”. It is: use rewards to support the behaviour, never to replace the reason for it.
Feedback helps on average, and hurts more often than you’d think
0.48
Average effect of feedback on learning, across 435 studies
38%
Share of feedback interventions in an earlier review that made performance worse
The main culprit: feedback that pointed attention at the person rather than the task. Useful feedback answers three questions. Where am I going? How am I going? Where to next? An error state that answers none of them is a status message, not feedback.
× About the person
“Wrong! Try again.”
- Says how you did, not what to do
- Nothing to act on
✓ About the work
“Not yet. You found the area; the question asks for the perimeter. Add up the four sides.”
- Where you are, where you’re going, what next
An error state is a teaching moment. Its tone decides whether the learner tries again or hides.
Mindset is real, small and conditional
Predict before you look
Growth-mindset interventions teach learners that ability can improve with effort. Across 63 studies:
What is the average effect on achievement?
About 0.05, and not significant after correcting for publication bias. The best single study, a national experiment across 65 US schools, found a gain of about 0.10 grade points for lower-achieving students, and only in schools whose peer culture supported taking on challenges.
Belonging interventions show the same shape. They helped historically lower-progressing students finish their first year, but only where those students had real chances to belong. Context does the work the intervention unlocks.
The design reading: framing ability as improvable costs nothing and may help the learners who need it most, in the right setting. It isn’t a lever that moves outcomes on its own.
Effort lasts when three needs are met
- Autonomy: a sense of real choice.
- Competence: a sense of honest progress.
- Relatedness: a sense of connection, and safety.
Psychological safety isn’t a tone-of-voice preference. Learners take the risks learning needs only when failure is low-stakes and never shaming.
Take this with you
- Rewards can crowd out the reason to learn. Point mechanics at the work, never at the mechanic.
- Feedback about the task helps. Feedback about the person often hurts.
- Mindset and belonging interventions are small and depend on context. Build the context.
If you removed every point, badge and streak tomorrow, what would still bring the learner back? That is your product.
Try this week
Rewrite three error states.
- Collect three error or “incorrect” messages from your product.
- Check each against the three questions: where am I going, how am I going, where to next?
- Rewrite each so it is about the work, not the person, and ends with a next step.
To mull over
- Which of your engagement metrics would go up if learners cared less about the subject?
- Where could you give learners a real choice without fragmenting the learning path?
- Who loses on your leaderboard, and how many of them are there?
Sources
- 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).
- Cerasoli, C. P., Nicklin, J. M., & Ford, M. T. (2014). Psychological Bulletin, 140(4). Sailer, M., & Homner, L. (2020). Educational Psychology Review, 32. Hanus, M. D., & Fox, J. (2015). Computers & Education, 80.
- Kluger, A. N., & DeNisi, A. (1996). The effects of feedback interventions on performance. Psychological Bulletin, 119(2). Wisniewski, B., Zierer, K., & Hattie, J. (2020). Frontiers in Psychology, 10. Hattie, J., & Timperley, H. (2007). The power of feedback.
- Yeager, D. S., et al. (2019). A national experiment reveals where a growth mindset improves achievement. Nature, 573. Macnamara, B. N., & Burgoyne, A. P. (2023). Psychological Bulletin, 149.
- Walton, G. M., et al. (2023). Where and with whom does a brief social-belonging intervention promote progress in college? Science, 380. Ryan, R. M., & Deci, E. L. (2000). Self-determination theory. American Psychologist, 55(1).