A woman who marries without a four-year college degree now carries 62 percent higher odds of that marriage ending in divorce than a woman who has one — and the gap has been widening for decades, not narrowing. The number comes from a seven-decade analysis of U.S. marriage and divorce records published in the Journal of Marriage and Family, and it complicates a quieter assumption a lot of people carry about what a college degree is actually for. You were probably told a diploma buys a bigger paycheck and a better title. The data suggests it may also be buying a more durable marriage.
The Diploma Effect That Kept Getting Stronger
The study was built by Stanford sociologist Michael J. Rosenfeld, working with researcher Katharina Roesler, who tracked marriage cohorts from 1950 through 2017 using national survey data rather than a single snapshot in time. Wives without a bachelor’s degree showed a baseline hazard of divorce 1.62 times higher than wives who held one — already a wide gap on its own. What stood out to the researchers was that the gap kept growing: the interaction between education and marriage cohort was statistically significant (coefficient of 1.015, p < .001), meaning each successive generation of newlyweds saw the education divide in divorce risk stretch a little further than the one before it. As the authors put it directly, “women without the BA degree appear to be increasingly at risk for divorce.”
Researchers describe this pattern with a term called the Diverging Destinies Hypothesis — the idea that as a bachelor’s degree became more central to financial stability in the U.S., the life outcomes of people with one and without one started splitting apart in more places than just a paycheck. This new research suggests marriage stability is one of them. A degree tends to arrive bundled with things that steady a marriage: a later start, more savings before the wedding, dual incomes, and often a partner who also finished college. None of that guarantees a lasting marriage. But averaged across millions of couples over seventy years, it adds up to a measurable and growing edge.
Marrying Young Went From Common to Risky
The second major shift the researchers documented is about timing rather than credentials, and the scale of the change is striking. In 1960, 52 percent of first marriages recorded in national survey data were to women still in their teens. By 2015, that share had collapsed to just 4 percent. In two generations, teen marriage went from the default path into adulthood to a genuine outlier choice.
That collapse in how common teen marriage was tracked alongside a rise in how risky it became. Wives who married as teenagers showed a baseline hazard of divorce 1.68 times higher than wives who married later, and that risk didn’t hold steady across the decades — it climbed. The cohort interaction for teen marriage was also statistically significant (coefficient of 1.008, p < .001), and the researchers flagged it as one of the most consistent findings across every version of their model. Their conclusion: “teen marriage is increasingly associated with divorce.”
What Changed Isn’t the Vow — It’s the Runway Leading Up to It
Put the two findings side by side and a pattern emerges that has less to do with romance and more to do with timing and preparation. In the 1950s, marrying young or skipping college wasn’t unusual enough to carry much of a penalty — most people were doing some version of the same thing on a similar schedule. As those paths diverged, so did the outcomes attached to them. Finishing a degree and marrying later aren’t just markers of a particular kind of life; per this data, they function as a kind of runway, giving a couple more time and more resources to build something that holds.
None of this means you’re destined for divorce if you married young or without a degree, or guaranteed a stable marriage if you did neither. Hazard ratios describe patterns across large populations, not verdicts on individual couples. What the data does offer is a corrective to a familiar story. A college degree was always sold to you as a career move. Across seventy years of American marriages, it has quietly become something closer to a stabilizer — one more piece of evidence that the conditions surrounding a marriage, not just the two people in it, shape how long that marriage lasts.
