Michael Rosenfeld offers a new theory of family dynamics to account for the interesting and startling changes in marriage and family composition in the United States in recent years. His argument revolves around the independent life stage that emerged around 1960. This stage is experienced by young adults after they leave their parents' homes but before they settle down to start their own families. During this time, young men and women go away to college, travel abroad, begin careers, and enjoy social independence. This independent life stage has reduced parental control over the dating...