This is an approach we totally believe in. The rewards and punishments only work in short-term. What works, is giving natural consequence of any action, this makes the child aware of what can go wrong and how it affects others.
Here is a short article by TheMontessoriDad.com on this topic. Enjoy Reading!
https://themontessoridad.com/trending/why-reward-and-punishment-approach-does-not-work/
image credit: www.Missbehaviour.ca