ScienceNot yet confirmed elsewhere1 publisher2 min readPublished
Highly educated Swiss women stayed above 80% partnered while their degree share more than tripled
University of Zurich sociologists found no marriage squeeze for highly educated Swiss women, whose partnership rate stayed above 80% from 1999 to 2024. The authors say men's partner choices adjusted as the women's degree share rose.
The Scientist · Science desk
25% of men in the top income third have a partner who earns about the same as they do. Over 60% of women aged 30 to 40 held a higher education degree in 2024, up from below 20% in 1999.
| Figure | Value | Note | Claim |
|---|---|---|---|
| Men in top income third whose partner earns about the same | 25% of these men | 13 | |
| Women with a higher education degree, 2024, over | 60% of women | women aged 30 to 40 | 2 |
| Same share, 1999, below | 20% of women | 2 |
What happened
- Women aged 30 to 40 with a higher education degree went from below 20% to over 60% of their age group between 1999 and 2024.
- In 1999 only about one-quarter of highly educated men lived with a higher education graduate; by 2024 that pairing was their dominant pattern.
- Men with a medium level of education were nearly four times as likely to have a highly educated partner in 2024 as in 1999.
- For men with low levels of education, the likelihood of living without a partner has nearly tripled since 1999.
- Just a quarter of men in the top income third live with a partner whose earnings roughly match their own, even though most of them now have a highly educated partner.
Why it matters
- constraint A match on degrees cannot stand in for economic equality inside couples, because the income pattern stayed traditional.
- exposure Low-educated men are where the study finds a worsening outlook, in a group that is shrinking as a share of the population.
- decision Explanations for falling Swiss birth rates have to look past the marriage market, toward housing costs, work-family strain and changing expectations, according to the researchers.
A marriage squeeze needs two conditions: too few degree-holding men to go around, and women who keep looking for them. The first condition is in the data. The women's degree share more than tripled [16], Switzerland's rise was the steepest in Europe over the 25 years [1], and the share of highly educated men rose much more moderately [3]. The second condition is where the study found its surprise. "This result came as a surprise to us. We had expected a different trend," lead author Marco Giesselmann said [6].
The authors say women with tertiary education still prefer partners with the same level of education [7], and that men have been primarily adapting to the changing educational composition [8]. The thing this doesn't tell you is whether women got the partners they wanted. The outcome measured is living in a partnership [5], so the preference is the authors' reading of who ended up together. The data come from the Swiss Household Panel, a longitudinal survey [4]. The summary does not say how many of these partnerships are marriages.
Low-educated men carry the one worsening outcome. A near-tripling [11] is a ratio, and from a low starting rate it can still involve few men. The group has also been shrinking as a share of the population for years [12].
Education and income tell different stories. The authors describe traditional inequalities as less evident now in educational attainment but persistent in income [15]. "Gender-based income disparities continue to reinforce traditional economically unequal partnership patterns," Giesselmann said [14].
We think the birth-rate inference holds only for the group studied. A stable partnership rate among highly educated women removes the marriage market as an explanation for them [5]. It does not choose among the factors the authors name [17].
What to watch
- Whether the full paper in the Swiss Journal of Sociology reports the starting rate and sample size behind the near-tripling of partnerless low-educated men.
- Whether the paper separates marriage from other partnerships, since the reported measure is living in a partnership.
- Whether the slight upward trend in partnership among highly educated women continues as their share of the age group grows.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence68
- Adoption
- Insufficient
- Hype gap−5
- Incentives
- Insufficient
- Confidence55
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Over the past 25 years Switzerland has seen the steepest rise in the share of highly educated women across Europe.
- [2]
Between 1999 and 2024, the share of women aged 30 to 40 holding a higher education degree rose from below 20% to over 60%.
- [3]
Over the same period, the share of highly educated men increased much more moderately.
- [4]
Researchers from the Department of Sociology at the University of Zurich analyzed Swiss Household Panel data, a longitudinal social science survey, on marriage patterns and income in Switzerland between 1999 and 2024; the work is published in the Swiss Journal of Sociology.
- [5]
The study found no evidence of a marriage squeeze for highly educated women in Switzerland: the likelihood of highly educated women aged 30 to 40 living in a partnership stayed consistently above 80% over 25 years, with a slight upward trend.
- [6]
"This result came as a surprise to us. We had expected a different trend," said lead author Marco Giesselmann of UZH.
ReportedSupportedSource: Marco Giesselmann, lead author, University of Zurich, quoted by phys.orgView cited source - [7]
Women with tertiary education continue to prefer relationships with men who have the same level of education.
- [8]
According to the study, men have been the ones primarily adapting to the changing educational composition.
- [9]
In 1999 only about one-quarter of highly educated men were in a relationship with a higher education graduate, whereas by 2024 educationally equal relationships had become their dominant partnership pattern.
- [10]
Men with a medium level of education were nearly four times as likely to have highly educated partners in 2024 as in 1999.
- [11]
The relationship outlook for men with low levels of education may be declining: the likelihood that they live without a partner has nearly tripled since 1999.
- [12]
The share of men with low levels of education in the total population has been steadily declining for years.
- [13]
Only 25% of men in the top income third have a partner who earns about the same as they do, even though a majority are now in a relationship with a highly educated partner.
- [14]
"Gender-based income disparities continue to reinforce traditional economically unequal partnership patterns," said Giesselmann.
ReportedSupportedSource: Marco Giesselmann, lead author, University of Zurich, quoted by phys.orgView cited source - [15]
Traditional inequalities within couples are now less evident in educational attainment, but they persist in annual income.
- [16]
The share of women aged 30 to 40 with a higher education degree more than tripled between 1999 and 2024.
- [17]
According to the researchers, given the relative stability of partnership formation, the drop in Swiss birth rates has less to do with the marriage market than with institutional and cultural factors, such as changing expectations around self-fulfillment, balancing work and family life, starting a family no longer being a matter of course, and rising housing costs.
Sources
1 independent publisher whose own reporting we read for this story.
- phys.orgHighly educated women continue to find partners
1 article · October 13, 2026
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