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Summary
Family size decisions are influenced by the sex of children. Parents tend to have fewer children if their first two or three are of the same sex, particularly avoiding all females.
Area of Science:
- Sociology
- Demography
- Human Behavior
Background:
- Understanding factors influencing family planning is crucial for demographic studies.
- Parental preferences and societal norms can impact reproductive decisions.
Purpose of the Study:
- To investigate the relationship between the sex of the first children and subsequent family size.
- To determine if parental decisions on family limitation are influenced by the gender composition of their offspring.
Main Methods:
- A survey was conducted on 1851 families of students at Sevilla University.
- Data on family size and the sex of the first children were collected and analyzed.
Main Results:
- Families with the first two or three children of the same sex were significantly more likely to limit their family size to two or three children.
- Limiting family size to three children was more common when the first three children were not all females.
- Having more than three children was not significantly more frequent when the first three children were males compared to other gender combinations.
Conclusions:
- The sex composition of early children, particularly having same-sex siblings, influences parental decisions on family size.
- Societal or personal preferences regarding the sex of children may play a role in family planning outcomes.