Is hypergamy fading?
Here is a new paper from Christine R. Schwartz and Hongyun Han, and here is the key part of the abstract:
…marriages in which wives have the educational advantage were once more likely to dissolve, but this association has disappeared in more recent marriage cohorts. Another key finding is that the relative stability of marriages between educational equals has increased. These results are consistent with a shift away from rigid gender specialization toward more flexible, egalitarian partnerships, and they provide an important counterpoint to claims that progress toward gender equality in heterosexual relationships has stalled.
There are ungated versions here, and for the pointer I thank the excellent Kevin Lewis.