A new study from the Center for Social Justice in the United Kingdom found a big difference for children whose parents are married compared to those who are cohabiting.
The study, "Family Structure Still Matters," comes from the independent think tank that studies the root causes of social problems in Britain.
"Marriage has become a middle-class secret," the report said. "Among high income couples (the top quintile) 83% have tied the knot; among low-income parents (bottom quintile) only 55% are married....