The Furstenberg Conference consisted mostly of demographers reporting on big numbers. One exception was Annette Lareau, who followed up on the children in her ethnographic study, Unequal Childhoods. She had found that working class and poor parents fed, clothed, sheltered their kids, made sure they went to school - then let them pick what they did with their time. She called this the "natural growth" approach. Middle class parents, by contrast, mobilized all the resources they could to develop the individual talents of each child, a method she called "concerted cultivation."
When she revisited the children as they got into their twenties, she found the next step of the two patterns of childrearing. At 18 the working class and poor kids were on their own. Even if they thought the kids were making mistakes, their parents did not think it was their place to step in. The middle class parents, on the other hand, continued to be deeply involved in helping their kids organize their lives, often in ways that were invisible to the children. These are the "helicopter parents," hovering over their children, who have become well known to college administrators.
Which contributed to a further difference. Both sets of parents knew that their children would be better off going to college. Most of the middle class kids got there, with parental help. Most of the working class and poor kids did not, even when they tried. The parents did not think they could, or should, push their kids to push through the inevitable roadblocks of college life. At 18, their kids were all grown up.