[jack_pp]

Haven't read it but I remember reading about a study where they would watch some kids play with toys, record which were their favorite ones and then in another play session give them sweets for playing with their favorite toys after which those toys would no longer be their favorite.

However even though most people don't enjoy their work we must learn to get past that in order to achieve our goals, might as well learn this early imo.

Personally I hated most of school, pretty much every subject that wasn't math or programming. Rewards did motivate me to learn those things I didn't like.

So maybe only reward them for doing stuff they already don't like doing but would be good for them. If you see your kid doing well in math but poorly in history only reward them for history.