Yglesias points to some. In light of Dalrymple's essays on England, pointing out similar issues, this is interesting. In particular:
Between 2006 and 2008, among moderately educated women, 44 percent of all births occurred outside marriage, not far off the rate (54 percent) among high-school dropouts; among college-educated women, that proportion was just 6 percent.
The same pattern—families of middle-class nonprofessionals now resembling those of high-school dropouts more than those of college graduates—emerges with norm after norm: the percentage of 14-year-old girls living with both their mother and father; the percentage of adolescents wanting to attend college “very much”; the percentage of adolescents who say they’d be embarrassed if they got (or got someone) pregnant; the percentage of never-married young adults using birth control all the time.
