The effect of childhood family size on fertility in adulthood. New evidence form IV estimation

Sara Cools and Rannveig Kaldager Hart ()
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Rannveig Kaldager Hart: Statistics Norway, https://www.ssb.no/en/forskning/ansatte

Discussion Papers from Statistics Norway, Research Department

Abstract: While 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. Using the sex composition of the two first-born children as an instrumental variable, we estimate the effect of sibship size on adult fertility. Estimations are done on high-quality data from Norwegian administrative registers. Our study sample is all first- 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, both by shifting some men into fatherhood and increasing family size. For women, a negative quantum effect emerges, driven by a preference for two rather than three children among women from three-child families. Studying mediators we show 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.

Keywords: Fertility; Intergenerational Transmission; Instrumental Variables (search for similar items in EconPapers)
JEL-codes: C26 J13 J22 (search for similar items in EconPapers)
Date: 2015-03
New Economics Papers: this item is included in nep-lab
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