“Men now are increasingly likely to marry wives with more education and income than they have, and the reverse is true for women,” said Paul Fucito, spokesman for the Pew Center. “In recent decades, with the rise of well-paid working wives, the economic gains of marriage have been a greater benefit for men.”

The analysis examines Americans 30 to 44 years old, the first generation in which more women than men have college degrees. Women’s earnings have been increasing faster than men’s since the 1970s.

“We’ve known for some time that men need marriage more than women from the standpoint of physical and mental well-being,” said Stephanie Coontz, a professor at Evergreen State College in Olympia, Wash., and research director for the Council on Contemporary Families, a research and advocacy group. “Now it is becoming increasingly important to their economic well-being as well.”