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Demography

, Volume 54, Issue 1, pp 23–44 | Cite as

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

  • Sara Cools
  • Rannveig Kaldager Hart
Article

Abstract

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.

Keywords

Fertility Intergenerational transmission Instrumental variables Family size 

Notes

Acknowledgments

We are grateful to Lars Dommermuth, Joshua Goldstein, Shoshana Grossbard, Hege Kitterød, Andreas Kotsadam, Øystein Kravdal, Trude Lappegård, Torkild Lyngstad, Birgitte Sande Riise, Marit Rønsen, Kjetil Telle, and Odd Vaage as well as seminar participants at PAA 2014, ESPE 2014, EPC 2014, and Department of Demography at UC Berkeley, and the Editor and referees of Demography for helpful comments. The project is part of the research activities at ESOP at the University of Oslo, in collaboration with the Ragnar Frisch Centre for Economic Research, Project 1110, both of which are supported by the Norwegian Research Council. Data made available by Statistics Norway have been essential for the research project. Hart’s work was supported by the Norwegian Research Council under Grant No. 202442/S20 and 236926.

Supplementary material

13524_2016_537_MOESM1_ESM.pdf (362 kb)
ESM 1 (PDF 362 kb)

References

  1. Aassve, A., Meroni, E., & Pronzato, C. (2012). Grandparenting and childbearing in the extended family. European Journal of Population/Revue Européenne de Démographie, 28, 499–518.Google Scholar
  2. Andersson, G., Hank, K., Rønsen, M., & Vikat, A. (2006). Gendering family composition: Sex preferences for children and childbearing behavior in the Nordic countries. Demography, 43, 255–267.CrossRefGoogle Scholar
  3. Angrist, J. D., & Evans, W. N. (1998). Children and their parents’ labor supply: Evidence from exogenous variation in family size. American Economic Review, 88, 450–477.Google Scholar
  4. Angrist, J., Lavy, V., & Schlosser, A. (2010). Multiple experiments for the causal link between the quantity and quality of children. Journal of Labor Economics, 28, 773–824.CrossRefGoogle Scholar
  5. Argys, L. M., Rees, D. I., Averett, S. L., & Witoonchart, B. (2007). Birth order and risky adolescent behavior. Economic Inquiry, 44, 215–233.CrossRefGoogle Scholar
  6. Axinn, W. G., Clarkberg, M. E., & Thornton, A. (1994). Family influences on family size preferences. Demography, 31, 65–79.Google Scholar
  7. Axinn, W. G., & Thornton, A. (1996). The influence of parents’ marital dissolutions on children’s attitudes toward family formation. Demography, 33, 66–81.Google Scholar
  8. Barber, J. S. (2000). Intergenerational influences on the entry into parenthood: Mothers’ preferences for family and nonfamily behavior. Social Forces, 79, 319–348.CrossRefGoogle Scholar
  9. Becker, G. S. (1960). An economic analysis of fertility. In Demographic and economic change in developed countries: A conference of the Universities–National Bureau for Economic Research (pp. 209–240). Princeton, NJ: Princeton University Press.Google Scholar
  10. Becker, G. S. (1991). A treatise on the family. Cambridge, MA: Harvard University Press.Google Scholar
  11. Ben-Porath, Y., & Welch, F. (1976). Do sex preferences really matter? Quarterly Journal of Economics, 90, 285–307.CrossRefGoogle Scholar
  12. Bernardi, L. (2003). Channels of social influence on reproduction. Population Research and Policy Review, 22, 427–555.CrossRefGoogle Scholar
  13. Bernardi, L., & Klärner, A. (2014). Social networks and fertility. Demographic Research, 30(article 22), 641–670. doi: 10.4054/DemRes.2014.30.22 CrossRefGoogle Scholar
  14. Black, S. E., Devereux, P. J., & Salvanes, K. G. (2005). The more the merrier? The effect of family size and birth order on children’s education. Quarterly Journal of Economics, 120, 669–700.Google Scholar
  15. Black, S. E., Devereux, P. J., & Salvanes, K. G. (2010). Small family, smart family? Family size and the IQ scores of young men. Journal of Human Resources, 45, 33–58.CrossRefGoogle Scholar
  16. Buckles, K. S., & Munnich, E. L. (2012). Birth spacing and sibling outcomes. Journal of Human Resources, 47, 613–642.CrossRefGoogle Scholar
  17. Conley, D. (2004). The pecking order: A bold new look at how family and society determine who we become. New York, NY: Random House.Google Scholar
  18. Conley, D., & Glauber, R. (2006). Parental educational investment and children’s academic risk. Estimates of the impact of sibship size and birth order from exogenous variation in fertility. Journal of Human Resources, 41, 722–737.CrossRefGoogle Scholar
  19. Cools, S. (2013). Having it all: How children affect the work and wages of men and women (Doctoral dissertation). Oslo, Norway: Department of Economics, University of Oslo.Google Scholar
  20. Cruces, G., & Galiani, S. (2007). Fertility and female labor supply in Latin America: New causal evidence. Labour Economics, 14, 565–573.CrossRefGoogle Scholar
  21. Daouli, J., Demoussis, M., & Giannakopoulos, N. A. (2009). Sibling-sex composition and its effects on fertility and labor supply of Greek mothers. Economics Letters, 102, 189–191.CrossRefGoogle Scholar
  22. De Haan, M. (2010). Birth order, family size and educational attainment. Economics of Education Review, 29, 576–588.CrossRefGoogle Scholar
  23. Esping-Andersen, G., & Billari, F. C. (2015). Re-theorizing family demographics. Population and Development Review, 41, 1–31.CrossRefGoogle Scholar
  24. Evertsson, M. (2006). The reproduction of gender: Housework and attitudes towards gender equality in the home among Swedish boys and girls. British Journal of Sociology, 57, 415–436.CrossRefGoogle Scholar
  25. Gager, C. T., Cooney, T. M., & Call, K. T. (1999). The effects of family characteristics and time use on teenagers’ household labor. Journal of Marriage and Family, 61, 982–994.CrossRefGoogle Scholar
  26. Gauthier, A. H. (2007). The impact of family policies on fertility in industrialized countries: A review of the literature. Population Research and Policy Review, 26, 323–346.CrossRefGoogle Scholar
  27. Gini, C. (1951). Combinations and sequences of sexes in human families and mammal litters. Acta Genetica et Statistica Medica, 2, 220–244.Google Scholar
  28. Goldscheider, F., Bernhardt, E., & Lappegård, T. (2015). The gender revolution: A framework for understanding changing family and demographic behavior. Population and Development Review, 41, 207–239.CrossRefGoogle Scholar
  29. Goodsell, T. L., James, S. L., Yorgason, J. B., & Call, V. R. (2015). Intergenerational assistance to adult children. Gender and number of sisters and brothers. Journal of Family Issues, 36, 979–1000.Google Scholar
  30. Hank, K. (2007). Parental gender preferences and reproductive behaviour: A review of the recent literature. Journal of Biosocial Science, 39, 759–767.CrossRefGoogle Scholar
  31. Hardoy, I., & Schøne, P. (2008). Hvor mye betyr barn for lønnsforskjeller mellom kvinner og menn? [How significant are children in explaining gender wage differences?]. Tidsskrift for Samfunnsforskning, 49, 3–36.Google Scholar
  32. Havnes, T., & Mogstad, M. (2011). Money for nothing? Universal child care and maternal employment. Journal of Public Economics, 95, 1455–1465.CrossRefGoogle Scholar
  33. Hayford, S. R. (2009). The evolution of fertility expectations over the life course. Demography, 46, 765–783.CrossRefGoogle Scholar
  34. Hirvonen, L. (2009). The effect of children on earnings using exogenous variation in family size: Swedish evidence (Working Paper Series 2/2009). Stockholm, Sweden: Swedish Institute for Social Research.Google Scholar
  35. Imbens, G. W., & Angrist, J. D. (1994). Identification and estimation of local average treatment effects. Econometrica, 62, 467–475.CrossRefGoogle Scholar
  36. Kidwell, J. S. (1982). The neglected birth order: Middleborns. Journal of Marriage and Family, 44, 225–235.CrossRefGoogle Scholar
  37. Kippen, R., Evans, A., & Gray, E. (2007). Parental preference for sons and daughters in a Western industrial setting: Evidence and implications. Journal of Biosocial Science, 39, 583–597.CrossRefGoogle Scholar
  38. Kitagawa, T. (2015). A test for instrument validity. Econometrica, 83, 2043–2063.CrossRefGoogle Scholar
  39. Kitterød, R. H., & Rønsen, M. (2013). Does parenthood imply less specialization than before? Tales from the Norwegian time use surveys 1980–2010 (Statistics Norway Discussion Paper No. 757). Oslo: Statistics Norway.Google Scholar
  40. Kohler, H.-P., Rodgers, J. L., & Christensen, K. (1999). Is fertility behavior in our genes? Findings from a Danish twin study. Population and Development Review, 25, 253–288.CrossRefGoogle Scholar
  41. Kolk, M. (2014). Understanding transmission of fertility across multiple generations—Socialization or socioeconomics? Research in Social Stratification and Mobility, 35, 89–103.Google Scholar
  42. Kolk, M. (2015). The causal effect of an additional sibling on completed fertility: An estimation of intergenerational fertility correlations by looking at siblings of twins. Demographic Research, 32(article 51), 1409–1420. doi: 10.4054/DemRes.2015.32.51 CrossRefGoogle Scholar
  43. Lyngstad, T. H., & Prskawetz, A. (2010). Do siblings’ fertility decisions influence each other? Demography, 47, 923–934.CrossRefGoogle Scholar
  44. McDonald, P. (2000a). Gender equity in theories of fertility transition. Population and Development Review, 26, 427–439.CrossRefGoogle Scholar
  45. McDonald, P. (2000b). Gender equity, social institutions and the future of fertility. Journal of Population Research, 17, 1–16.CrossRefGoogle Scholar
  46. Mogstad, M., & Wiswall, M. (2009). How much should we trust linear instrumental variables estimators? An application to family size and children’s education (IZA Discussion Paper No. 4562). Bonn, Germany: Institute for the Study of Labor.Google Scholar
  47. Morgan, S. P. (2003). Is low fertility a twenty-first-century demographic crisis? Demography, 40, 589–603.CrossRefGoogle Scholar
  48. Murphy, M. (2013). Cross-national patterns of intergenerational continuities in childbearing in developed countries. Biodemography and Social Biology, 59, 101–126.CrossRefGoogle Scholar
  49. Peter, N., Lundborg, P., & Webbink, D. (2015). The effect of a sibling’s gender on earnings, education and family formation (IZA Discussion Paper No. 9128). Bonn, Germany: Institute for the Study of Labor.Google Scholar
  50. Rodgers, J., Kohler, H.-P., Kyvik, K., & Christensen, K. (2001). Behavior genetic modeling of human fertility: Findings from a contemporary Danish twin study. Demography, 38, 29–42.CrossRefGoogle Scholar
  51. Rønsen, M. (2004). Fertility and family policy in Norway: A reflection on trends and possible connections. Demographic Research, 10(article 10), 265–286. doi: 10.4054/DemRes.2004.10.10 CrossRefGoogle Scholar
  52. Rønsen, M., & Skrede, K. (2010). Can public policies sustain fertility in the Nordic countries? Lessons from the past and questions for the future. Demographic Research, 13(article 22), 321–346. doi: 10.4054/DemRes.2010.13.22 CrossRefGoogle Scholar
  53. Salmon, C. A., Shackelford, T. K., & Michalski, R. L. (2012). Birth order, sex of child, and perceptions of parental favoritism. Personality and Individual Differences, 52, 357–362.CrossRefGoogle Scholar
  54. Sieber, S. D. (1974). Toward a theory of role accumulation. American Sociological Review, 39, 567–578.CrossRefGoogle Scholar
  55. Spitze, G., & Trent, K. (2006). Gender differences in adult sibling relations in two-child families. Journal of Marriage and Family, 68, 977–992.CrossRefGoogle Scholar
  56. Starrels, M. E., & Holm, K. E. (2000). Adolescents’ plans for family formation: Is parental socialization important? Journal of Marriage and Family, 62, 416–429.CrossRefGoogle Scholar
  57. Statistics Norway. (1983). Time Budget Survey 1980–81 (Norges offisielle statistikk, B378). Oslo: Statistics Norway.Google Scholar
  58. Waynforth, D. (2011). Grandparental investment and reproductive decisions in the Longitudinal 1970 British Cohort Study. Proceedings of the Royal Society B: Biological Sciences, 297, 1155–1160.Google Scholar

Copyright information

© Population Association of America 2016

Authors and Affiliations

  1. 1.Institute for Social ResearchOsloNorway
  2. 2.Department of Sociology and Human GeographyUniversity of OsloOsloNorway
  3. 3.Research DepartmentStatistics NorwayOsloNorway

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