I have no doubt that there are problems in America caused by the fact that children who are born from poorer families have significant handicaps (i.e., it's har

I have no doubt that there are problems in America caused by the fact that children who are born from poorer families have significant handicaps (i.e., it's hard to concentrate in school when you're hungry, and the sound of gunshots at night tend to distract you from homework). It's also true, though, that to whatever extent that genetics influence relative income (and despite counter examples such as the Romney family, I'd like to hope that intelligence has _some_ correlation with income) that might explain some of the correlation between parental income and the income of their children. A proper study should try to study the correlation of parental income with the income of the income of adopted children (preferably adopted under the age of two). This is why sociological research is so difficult....