One University of Minnesota study … found that whether a child received supportive parenting in the first few years of life was at least as good a predictor as I.Q. of whether he or she would graduate from high school.
This may illuminate one way that poverty replicates itself from generation to generation. Children in poor households grow up under constant stress, disproportionately raised by young, single mothers also under tremendous stress, and the result may be brain architecture that makes it harder for the children to thrive at school or succeed in the work force.
… “This science suggests a very different reality,” Tough writes. “It says that the character strengths that matter so much to young people’s success are not innate; they don’t appear in us magically, as a result of good luck or good genes. And they are not simply a choice. They are rooted in brain chemistry, and they are molded, in measurable and predictable ways, by the environment in which kids grow up. That means the rest of us — society as a whole — can do an enormous amount to influence their development.” NYT: "Cuddle Your Kid!" Nicholas D. Kristof