Cristin-resultat-ID: 1420153
Sist endret: 23. juni 2017 11:33
NVI-rapporteringsår: 2016
Vitenskapelig artikkel

The Effect of Childhood Family Size on Fertility in Adulthood: New Evidence From IV Estimation

  • Sara Cools og
  • Rannveig Kaldager Hart


ISSN 0070-3370
e-ISSN 1533-7790
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2017
Publisert online: 2016
Trykket: 2017
Volum: 54
Hefte: 1
Sider: 23 - 44
Open Access


Scopus-ID: 2-s2.0-85007425678

Beskrivelse Beskrivelse


The Effect of Childhood Family Size on Fertility in Adulthood: New Evidence From IV Estimation


Although fertility is positively correlated across generations, the causal effect of children’s experience with larger sibships on their own fertility in adulthood is poorly understood. With the sex composition of the two firstborn children as an instrumental variable, we estimate the effect of sibship size on adult fertility using high-quality data from Norwegian administrative registers. Our study sample is all firstborns or second-borns during the 1960s in Norwegian families with at least two children (approximately 110,000 men and 104,000 women). An additional sibling has a positive effect on male fertility, mainly causing them to have three children themselves, but has a negative effect on female fertility at the same margin. Investigation into mediators reveals that mothers of girls shift relatively less time from market to family work when an additional child is born. We speculate that this scarcity in parents’ time makes girls aware of the strains of life in large families, leading them to limit their own number of children in adulthood.


Aktiv cristin-person

Sara Cools

  • Tilknyttet:
    ved Institutt for samfunnsforskning
Aktiv cristin-person

Rannveig Kaldager Hart

  • Tilknyttet:
    ved Statistisk sentralbyrå
  • Tilknyttet:
    ved Institutt for sosiologi og samfunnsgeografi ved Universitetet i Oslo
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