Spoiler: a lot.
Children aren’t born needing rewards to learn. In the beginning, curiosity is enough. A toddler doesn’t need a sticker to pour water, sort leaves, or repeat a movement until it makes sense to them. The drive comes from within, not from what waits at the end.
When learning becomes tied to external rewards — candy, tokens, badges, points — something subtle begins to shift. The work becomes a means to an end. The question moves from “What can I figure out?” to “What do I get?”
Decades of educational psychology have documented a pattern: when children receive expected, tangible rewards for activities they already enjoy, their intrinsic interest can diminish once those rewards disappear. The research term for this is the overjustification effect — the reward replaces the reason. Over time, the reward can become more important than the activity itself, shifting attention away from the satisfaction of learning and toward the expectation of a payoff.
Of course, not every activity is inherently enjoyable. Children also need to learn to complete necessary tasks, work through challenges, and take responsibility even when they would rather be doing something else. The goal isn’t to make every activity enjoyable, but to help children develop the self-discipline and understanding to engage in meaningful work without always needing an external reward.
The consequences of reward-based systems extend beyond academics. When children earn points, tokens, or prizes for meeting behavioral expectations, cooperation and responsibility can become transactions, too. Instead of developing an understanding of why their actions matter to themselves and others, they learn to look for what those actions will earn them.
That mindset doesn’t necessarily stay in childhood. When learning is built around rewards, some students may continue participating primarily when a grade or payoff is attached. Others may struggle to sustain interest when external incentives are removed. In both cases, the opportunity to develop an internal drive to learn can be weakened rather than strengthened.
When intrinsic motivation is nurtured, it can become a lasting part of how children approach learning and move through the world.
Curious how we design learning around motivation instead of rewards? Explore our lab schools here.