Archive · 11 Sep 2026
China’s only children increasingly favor partners without siblings
A study looked at whether people in China care about a future partner’s sibling status.
It found that people without siblings are more likely to choose partners who also have no siblings.
Their chance of making this kind of match was 18.4% higher.
This may be because only children are used to receiving their parents’ attention and resources alone.
They may worry about sharing family resources with a partner’s siblings.
They may also prefer families with fewer competing heirs and fewer complicated relationships.
China’s marriage rates have fallen sharply since 2017.
Marriage registrations also fell in the first half of 2026.
A working paper by Fangqi Wen found that only children are 18.4% more likely to marry another only child.
The study suggests sibling status is becoming a factor in Chinese partner selection.
Only children may prefer households without competing heirs or complex family loyalties.
China’s marriage rates have fallen by half since 2017.
Marriage registrations dropped 7.5% in the first half of 2026, according to the article.
- Who
- Only children in China and their potential marriage partners; the finding comes from a working paper by Fangqi Wen of Ohio State University.
- What
- A working paper found that only children are 18.4% more likely than people with siblings to marry another only child.
- When
- The article cites marriage trends since 2017 and a 7.5% registration decline in the first half of 2026.
- Where
- China.
- Why
- Only children may prefer partners without siblings because they are accustomed to being the sole focus of parental attention and the sole claimant to family resources.
- Study author
- Fangqi Wen of Ohio State University
- Key finding
- Only children were 18.4% more likely to match with another only child
- Marriage-rate trend
- China’s marriage rates have fallen by half since 2017
- 2026 registrations
- Marriage registrations fell 7.5% in the first half of 2026
- Relevant policy
- China’s one-child policy lasted from 1979 to 2015
- Potential motivation
- Only children may seek to avoid competing heirs and complicated family loyalties