The researcher supposed that the reduced stressors in poor parents' lives allowed them to be more nurturing, resulting in reduced problems with their children. Seems like a no-brainer to do, considering this analysis:
"Bearing that in mind, Randall Akee, an economist at the University of California, Los Angeles, and a collaborator of Professor Costello’s, argues that the supplements actually save money in the long run. He calculates that 5 to 10 years after age 19, the savings incurred by the Cherokee income supplements surpass the initial costs — the payments to parents while the children were minors. That’s a conservative estimate, he says, based on reduced criminality, a reduced need for psychiatric care and savings gained from not repeating grades."
"Bearing that in mind, Randall Akee, an economist at the University of California, Los Angeles, and a collaborator of Professor Costello’s, argues that the supplements actually save money in the long run. He calculates that 5 to 10 years after age 19, the savings incurred by the Cherokee income supplements surpass the initial costs — the payments to parents while the children were minors. That’s a conservative estimate, he says, based on reduced criminality, a reduced need for psychiatric care and savings gained from not repeating grades."
That means, its not only a good idea, its free.