The odd thing about those photos at the top is that, if I were casting a movie and needed a girl who was a bully, I would cast the girl on the right. I wonder how people behave if they act as though the bullies are right? Does that mean they get to act like a bully, because bullying helps people?
I read the article, and they are not talking about paying all kids -- they are talking about trying to affect change in the lowest schools, where kids are doing the worst. That said, they got their best results when they paid out THE LEAST to the YOUNGEST kids. When they paid second grade kids $2 per book to read, the kids scored better on their reading tests at the end of the year. Sometimes, they paid the older kids up to $500 and did not get great results. Paying kids does not equal good results.