When a child's behavior isn't disciplined while they're young, they can grow up to be criminals when they are adults. We shouldn't reward a child for acting bad then changing how he acts for his own benefit. Maturity is a natural part of a person's life that helps them socialize with other adults.
If we pay children for changing their behavior their behavior won't change. In fact, when these children grow up, they will think that the world owes them. They would expect more pay for over hours and rewards for almost anything. Because of this, I think paying children as a reward for changing their behavior is wrong