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European Journal of Population

, Volume 30, Issue 3, pp 263–290 | Cite as

The Estimation of Fertility Effects on Happiness: Even More Difficult than Usually Acknowledged

  • Øystein KravdalEmail author
Article

Abstract

There have been many studies of how the number of children in a family affects the parents’ or the children’s lives. One strand of this research focuses on the implications of fertility for the parents’ level of self-reported well-being or happiness. It is argued in this paper that an overall “happiness effect” is not very informative because of the presumably large variation in individuals’ perceived gains from having children. Furthermore, it is explained that such an effect would be difficult to estimate. Most importantly, the highly varying ideas about how a child will affect life quality are important for the decision about whether to have a child. Many of those who have few or no children have chosen this because they think their life will be best this way, and their happiness therefore tells us little about how happy their more fertile counterparts—who to a large extent have different views about the consequences of childbearing—would have been if they had few or no children. This estimation problem that arises when effects of a certain event (here childbearing) are heterogeneous, and the individuals who experience that event tend to be among those for whom the effects are particularly positive or negative, is acknowledged in the treatment effect literature. However, there is little consciousness about it in the fertility–happiness research. In addition, there is a more “standard” selection problem: factors with implications for childbearing desires, or for the chance of fulfilling these, may also affect or be linked to happiness for other reasons. Unfortunately, even the most advanced statistical approaches that have been used in this research area fail to handle all these problems, so reported results should be interpreted very cautiously.

Keywords

Fertility Happiness Heterogeneity Method Reflection Selection Subjective Well-being 

Notes

Acknowledgments

The very helpful and insightful comments from Wendy Sigle-Rushton, Torkild Lyngstad, Mikko Myrskylä and two reviewers are greatly appreciated. The study is part of a project on consequences of high fertility funded by the Norwegian Research Council and the Hewlett Foundation and of the FAMHEALTH ERC Advanced Grant project.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Department of EconomicsUniversity of OsloOsloNorway

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