This is the strongest objection to any reward chart and it deserves a straight answer rather than a defense. The research people usually mean is about paying children to do things they were already doing willingly. Pay a child to read who already loves reading, then stop paying, and they read less than before. That effect is real.
It is also not what a chart for a struggling child is doing.
Where the risk actually is
| Rewarding this | Risk | Why |
|---|---|---|
| Something they already love doing | High | You replace their reason with yours, then take yours away |
| Something they find genuinely hard | Low | There was no internal motivation to displace |
| Being good, in general | High | Unmeasurable, so it becomes a verdict on them |
| A specific thing they did | Low | It is information, not a judgment |
So do not put reading on the chart for a child who reads. Put it on for a child for whom sitting down with a book is a battle every evening.
The part that does the damage is losing
A reward that can be taken away does something worse than displacing motivation — it teaches a child that trying is how you lose things. That is the mechanism that produces "it's stupid, I don't care", and it arrives far faster than any effect on intrinsic motivation.
And the reward was never really the point
What a child is actually collecting is the experience of an adult noticing something and saying it out loud. The number is scaffolding for that. If you only ever pay out in points and never say the sentence, then yes — you have built exactly the thing the objection warns about.
The test of whether a chart is doing harm is simple: can it be lost, and is it paying for things that were already easy? If neither, you are making the good visible for a child who mostly hears the opposite. That is not a bribe.