IDEAS home Printed from https://ideas.repec.org/p/iza/izadps/dp17641.html
   My bibliography  Save this paper

The Only Child

Author

Listed:
  • Ilciukas, Julius

    (University of Amsterdam)

  • Lundborg, Petter

    (Lund University)

  • Plug, Erik

    (University of Amsterdam)

  • Rasmussen, Astrid Würtz

    (Aarhus University)

Abstract

We estimate the impact of having siblings on school outcomes of first-born children. By leveraging exogenous variation in first and later IVF treatments, we construct an improved instrumental variable estimator that tackles exclusion violations and identifies causal effects for compliers and always takers with siblings from later treatments. With nationwide school surveys linked to administrative records, we find that first-born children with and without siblings perform equally well on nationwide reading and math tests, are equally conscientious, agreeable, and emotionally stable, and report the same levels of school well-being. We conclude that the cognitive and non-cognitive outcomes of school-aged first-born children neither benefit nor suffer much from having siblings.

Suggested Citation

  • Ilciukas, Julius & Lundborg, Petter & Plug, Erik & Rasmussen, Astrid Würtz, 2025. "The Only Child," IZA Discussion Papers 17641, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp17641
    as

    Download full text from publisher

    File URL: https://docs.iza.org/dp17641.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. James Feyrer & Bruce Sacerdote & Ariel Dora Stern, 2008. "Will the Stork Return to Europe and Japan? Understanding Fertility within Developed Nations," Journal of Economic Perspectives, American Economic Association, vol. 22(3), pages 3-22, Summer.
    2. Jasmin Kantarevic & Stéphane Mechoulan, 2006. "Birth Order, Educational Attainment, and Earnings: An Investigation Using the PSID," Journal of Human Resources, University of Wisconsin Press, vol. 41(4).
    3. Li, Bingjing & Zhang, Hongliang, 2017. "Does population control lead to better child quality? Evidence from China’s one-child policy enforcement," Journal of Comparative Economics, Elsevier, vol. 45(2), pages 246-260.
    4. de Haan, Monique, 2010. "Birth order, family size and educational attainment," Economics of Education Review, Elsevier, vol. 29(4), pages 576-588, August.
    5. Åslund, Olof & Grönqvist, Hans, 2010. "Family size and child outcomes: Is there really no trade-off?," Labour Economics, Elsevier, vol. 17(1), pages 130-139, January.
    6. Lundborg, Petter & Plug, Erik & Rasmussen, Astrid Würtz, 2024. "Is There Really a Child Penalty in the Long Run? New Evidence from IVF Treatments," IZA Discussion Papers 16959, Institute of Labor Economics (IZA).
    7. Dalton Conley & Rebecca Glauber, 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, University of Wisconsin Press, vol. 41(4).
    8. Colm Harmon & Ian Walker & Niels Westergaard-Nielsen, 2001. "Introduction [to Education and earnings in Europe : a cross country analysis of the returns to education]," Open Access publications 10197/757, School of Economics, University College Dublin.
    9. Gary-Bobo, Robert J. & Prieto, Ana & Picard, Natalie, 2006. "Birth Order and Sibship Sex Composition as Instruments in the Study of Education and Earnings," CEPR Discussion Papers 5514, C.E.P.R. Discussion Papers.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Andersen, Dana C. & Gunes, Pinar Mine, 2023. "Birth Order Effects in the Developed and Developing World: Evidence from International Test Scores," IZA Discussion Papers 15931, Institute of Labor Economics (IZA).
    2. Monique De Haan & Erik Plug & José Rosero, 2014. "Birth Order and Human Capital Development: Evidence from Ecuador," Journal of Human Resources, University of Wisconsin Press, vol. 49(2), pages 359-392.
    3. Heather Congdon Fors & Annika Lindskog, 2023. "Within‐family inequalities in human capital accumulation in India," Review of Development Economics, Wiley Blackwell, vol. 27(1), pages 3-28, February.
    4. Lucio Esposito & Sunil Mitra Kumar & Adrián Villaseñor, 2020. "The importance of being earliest: birth order and educational outcomes along the socioeconomic ladder in Mexico," Journal of Population Economics, Springer;European Society for Population Economics, vol. 33(3), pages 1069-1099, July.
    5. Frida Skog, 2019. "Sibling Effects on Adult Earnings Among Poor and Wealthy Children Evidence from Sweden," Child Indicators Research, Springer;The International Society of Child Indicators (ISCI), vol. 12(3), pages 917-942, June.
    6. Wanchuan Lin & Juan Pantano & Shuqiao Sun, 2020. "Birth order and unwanted fertility," Journal of Population Economics, Springer;European Society for Population Economics, vol. 33(2), pages 413-440, April.
    7. Hanzhi Hu, 2023. "The Consequences of Fertility Decline on Educational Attainment in China," Population Research and Policy Review, Springer;Southern Demographic Association (SDA), vol. 42(6), pages 1-30, December.
    8. Jaqueline Oliveira, 2019. "Birth order and the gender gap in educational attainment," Review of Economics of the Household, Springer, vol. 17(3), pages 775-803, September.
    9. Christina J. Diaz & Jeremy E. Fiel, 2021. "When Size Matters: IV Estimates of Sibship Size on Educational Attainment in the U.S," Population Research and Policy Review, Springer;Southern Demographic Association (SDA), vol. 40(6), pages 1195-1220, December.
    10. Handy, Christopher & Shester, Katharine, 2020. "The Effect of Birth Order on Educational Attainment among the Baby Boom Generation," MPRA Paper 102426, University Library of Munich, Germany.
    11. Vu, Linh Hoang & Tran, Tuyen Quang, 2021. "Sibship composition, birth order and education: Evidence from Vietnam," International Journal of Educational Development, Elsevier, vol. 85(C).
    12. Christopher Handy & Katharine L. Shester, 2022. "Birth order and the decline in college completion among the baby boom generation," Economic Inquiry, Western Economic Association International, vol. 60(4), pages 1626-1643, October.
    13. Agarwal, Vikas & Cochardt, Alexander Elmar & Orlov, Vitaly, 2022. "Birth order and fund manager's trading behavior: Role of sibling rivalry," CFR Working Papers 22-12, University of Cologne, Centre for Financial Research (CFR).
    14. Kuba, Radim & Flegr, Jaroslav & Havlíček, Jan, 2018. "The effect of birth order on the probability of university enrolment," Intelligence, Elsevier, vol. 70(C), pages 61-72.
    15. Jingdong Zhong & Jingjing Gao & Chengfang Liu & Jie Huang & Renfu Luo, 2019. "Quantity–Quality Trade-Off and Early Childhood Development in Rural Family: Evidence from China’s Guizhou Province," IJERPH, MDPI, vol. 16(7), pages 1-29, April.
    16. Peter, Noemi & Lundborg, Petter & Webbink, Dinand, 2015. "The Effect of a Sibling's Gender on Earnings, Education and Family Formation," IZA Discussion Papers 9128, Institute of Labor Economics (IZA).
    17. Guo, Rufei & Yi, Junjian & Zhang, Junsen, 2017. "Family size, birth order, and tests of the quantity–quality model," Journal of Comparative Economics, Elsevier, vol. 45(2), pages 219-224.
    18. Øystein Kravdal, 2014. "The Estimation of Fertility Effects on Happiness: Even More Difficult than Usually Acknowledged," European Journal of Population, Springer;European Association for Population Studies, vol. 30(3), pages 263-290, August.
    19. Adriana D. Kugler & Santosh Kumar, 2017. "Preference for Boys, Family Size, and Educational Attainment in India," Demography, Springer;Population Association of America (PAA), vol. 54(3), pages 835-859, June.
    20. Åslund, Olof & Grönqvist, Hans, 2010. "Family size and child outcomes: Is there really no trade-off?," Labour Economics, Elsevier, vol. 17(1), pages 130-139, January.

    More about this item

    Keywords

    cognitive and non-cognitive development; siblings;

    JEL classification:

    • I21 - Health, Education, and Welfare - - Education - - - Analysis of Education
    • J13 - Labor and Demographic Economics - - Demographic Economics - - - Fertility; Family Planning; Child Care; Children; Youth
    • C26 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Instrumental Variables (IV) Estimation

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:iza:izadps:dp17641. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Holger Hinte (email available below). General contact details of provider: https://edirc.repec.org/data/izaaade.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.