> Do low SES children not understand that money is a reward? Maybe they understand that the money will be soon taken away by the adults. Either literally take

> Do low SES children not understand that money is a reward? Maybe they understand that the money will be soon taken away by the adults. Either literally taken away, or simply the next time the kids need something, they will be told "now that you have money, you can buy it for yourself" (effectively taxing the income at ~ 100% rate).