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Strategic Responses to Disparities in Spousal Desired Fertility: Experimental Evidence from Rural Tanzania

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  • Herrera-Almanza, Catalina

    (University of Illinois at Urbana-Champaign)

  • McCarthy, Aine Seitz

Abstract

In sub-Saharan Africa, the gap in fertility preferences between men and women may influence household fertility outcomes as men usually desire more children and have more intra-household bargaining power. We estimate the effect of an informational family planning program that randomizes the inclusion of husbands on fertility preferences (desired additional children) in rural Tanzania. Surprisingly, husbands who participated in joint family planning consultations increased their desired fertility, and their wives responded by also increasing their desired number of additional children, converging to his larger preferences. In contrast, women in private family planning consultations (without their husbands) reduced their fertility desires, while their husbands' preferences remained unchanged. We provide evidence that the increase in women's fertility preferences as a result of the joint consultations is related to polygamy. Women in polygamous marriages increase their demand for children substantially, likely as a strategic response to hearing their husbands' stated preferences during the joint consultations.

Suggested Citation

  • Herrera-Almanza, Catalina & McCarthy, Aine Seitz, 2025. "Strategic Responses to Disparities in Spousal Desired Fertility: Experimental Evidence from Rural Tanzania," IZA Discussion Papers 18115, IZA Network @ LISER.
    • Handle: RePEc:iza:izadps:dp18115
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    1. D’Exelle, Ben & Lépine, Aurélia & Bakyono, Richard & Tapsoba, Ludovic D.G., 2023. "Fertility and polygyny: Experimental evidence from Burkina Faso," Journal of Development Economics, Elsevier, vol. 164(C).
    2. Christine A. Bachrach & S. Philip Morgan, 2013. "A Cognitive–Social Model of Fertility Intentions," Population and Development Review, The Population Council, Inc., vol. 39(3), pages 459-485, September.
    3. D’Exelle, Ben & Ringdal, Charlotte, 2022. "Women’s use of family planning services: An experiment on the husband’s involvement," Journal of Development Economics, Elsevier, vol. 158(C).
    4. Céline Zipfel, 2022. "The demand side of Africa's demographic transition: desired fertility, wealth, and jobs," STICERD - Economic Organisation and Public Policy Discussion Papers Series 71, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
    5. Fenske, James, 2015. "African polygamy: Past and present," Journal of Development Economics, Elsevier, vol. 117(C), pages 58-73.
    6. John B. Casterline & John Bongaarts & John Bongaarts, 2017. "Africa's Unique Fertility Transition," Population and Development Review, The Population Council, Inc., vol. 43, pages 39-58, May.
    7. Tom S. Vogl, 2016. "Differential Fertility, Human Capital, and Development," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 83(1), pages 365-401.
    8. Alberto Abadie, 2005. "Semiparametric Difference-in-Differences Estimators," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 72(1), pages 1-19.
    9. Gary S. Becker & H. Gregg Lewis, 1974. "Interaction between Quantity and Quality of Children," NBER Chapters, in: Economics of the Family: Marriage, Children, and Human Capital, pages 81-90, National Bureau of Economic Research, Inc.
    10. Mulubrhan Amare & Channing Arndt & Kristi Mahrt & George Mavrotas, 2021. "Polygynous Family Structure and Child Undernutrition in Nigeria," Journal of Development Studies, Taylor & Francis Journals, vol. 57(10), pages 1640-1661, October.
    11. Barro, Robert J & Becker, Gary S, 1989. "Fertility Choice in a Model of Economic Growth," Econometrica, Econometric Society, vol. 57(2), pages 481-501, March.
    12. Erica FIELD & Vera MOLITOR & Alice SCHOONBROODT & Michèle TERTILT, 2016. "Gender Gaps in Completed Fertility," JODE - Journal of Demographic Economics, Cambridge University Press, vol. 82(2), pages 167-206, June.
    13. Oded Galor & Marc Klemp, 2019. "Human Genealogy Reveals a Selective Advantage to Moderate Fecundity," Working Papers 2019-1, Brown University, Department of Economics.
    14. Nava Ashraf & Erica M. Field & Alessandra Voena & Roberta Ziparo, 2020. "Maternal Mortality Risk and Spousal Differences in the Demand for Children," NBER Working Papers 28220, National Bureau of Economic Research, Inc.
    15. Oded Galor & Omer Moav, 2002. "Natural Selection and the Origin of Economic Growth," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(4), pages 1133-1191.
    16. John Bongaarts, 2025. "Fertility Transitions in Low‐ and Middle‐Income Countries: The Role of Preferences," Population and Development Review, The Population Council, Inc., vol. 51(1), pages 163-180, March.
    17. Fehr, Dietmar & Mollerstrom, Johanna & Perez-Truglia, Ricardo, 2024. "Listen to her: Gender differences in information diffusion within the household," Journal of Public Economics, Elsevier, vol. 239(C).
    18. David N. Weil & Oded Galor, 2000. "Population, Technology, and Growth: From Malthusian Stagnation to the Demographic Transition and Beyond," American Economic Review, American Economic Association, vol. 90(4), pages 806-828, September.
    19. Miller, Grant & de Paula, Áureo & Valente, Christine, 2025. "Subjective expectations and demand for contraception," Journal of Econometrics, Elsevier, vol. 249(PB).
    20. Nava Ashraf & Erica Field & Jean Lee, 2014. "Household Bargaining and Excess Fertility: An Experimental Study in Zambia," American Economic Review, American Economic Association, vol. 104(7), pages 2210-2237, July.
    21. Jean-Marie Baland & Roberta Ziparo, 2017. "Intra-household bargaining in poor countries," WIDER Working Paper Series wp-2017-108, World Institute for Development Economic Research (UNU-WIDER).
    22. Margaret Frye & Lauren Bachan, 2017. "The demography of words: The global decline in non-numeric fertility preferences, 1993–2011," Population Studies, Taylor & Francis Journals, vol. 71(2), pages 187-209, May.
    23. John B. Casterline & John Bongaarts & John B. Casterline & Samuel Agyei-Mensah, 2017. "Fertility Desires and the Course of Fertility Decline in sub-Saharan Africa," Population and Development Review, The Population Council, Inc., vol. 43, pages 84-111, May.
    24. Joseph P. Romano & Michael Wolf, 2005. "Exact and Approximate Stepdown Methods for Multiple Hypothesis Testing," Journal of the American Statistical Association, American Statistical Association, vol. 100, pages 94-108, March.
    25. Donald, Aletheia Amalia & Goldstein, Markus & Koroknay-Palicz, Tricia & Sage, Mathilde, 2024. "The Fertility Impacts of Development Programs," Policy Research Working Paper Series 10848, The World Bank.
    26. McKenzie, David, 2012. "Beyond baseline and follow-up: The case for more T in experiments," Journal of Development Economics, Elsevier, vol. 99(2), pages 210-221.
    27. Oded Galor, 2011. "Unified Growth Theory and Comparative Development," Rivista di Politica Economica, SIPI Spa, issue 2, pages 9-21, April-Jun.
    28. Maximilian W. Müller & Joan Hamory & Jennifer Johnson-Hanks & Edward Miguel, 2022. "The illusion of stable fertility preferences," Population Studies, Taylor & Francis Journals, vol. 76(2), pages 169-189, May.
    29. Dozie Okoye & Roland Pongou, 2024. "Missions, fertility transition, and the reversal of fortunes: evidence from border discontinuities in the emirates of Nigeria," Journal of Economic Growth, Springer, vol. 29(2), pages 251-325, June.
    30. Gietel-Basten, Stuart & LoPalo, Melissa & Spears, Dean & Vyas, Sangita, 2024. "Do fertility preferences in early adulthood predict later average fertility outcomes of the same cohort?: Pritchett (1994) revisited with cohort data," Economics Letters, Elsevier, vol. 244(C).
    31. Abigail Barr & Marleen Dekker & Wendy Janssens & Bereket Kebede & Berber Kramer, 2019. "Cooperation in Polygynous Households," American Economic Journal: Applied Economics, American Economic Association, vol. 11(2), pages 266-283, April.
    32. Laurie DeRose & Alex Ezeh, 2010. "Decision-Making Patterns and Contraceptive Use: Evidence from Uganda," Population Research and Policy Review, Springer;Southern Demographic Association (SDA), vol. 29(3), pages 423-439, June.
    33. Joseph P. Romano & Michael Wolf, 2005. "Stepwise Multiple Testing as Formalized Data Snooping," Econometrica, Econometric Society, vol. 73(4), pages 1237-1282, July.
    34. Amy L. Damon & Aine Seitz McCarthy, 2019. "Partnerships and production: Agriculture and polygyny in Tanzanian households," Agricultural Economics, International Association of Agricultural Economists, vol. 50(5), pages 527-542, September.
    35. Pierre-Andre Chiappori & Maurizio Mazzocco, 2017. "Static and Intertemporal Household Decisions," Journal of Economic Literature, American Economic Association, vol. 55(3), pages 985-1045, September.
    36. Vida Maralani & Candas Pinar, 2024. "Spousal Agreement on Sex Preferences for Children and Gender Gaps in Children's Education," Population and Development Review, The Population Council, Inc., vol. 50(3), pages 825-863, September.
    37. Matthias Doepke & Michèle Tertilt, 2018. "Women's Empowerment, the Gender Gap in Desired Fertility, and Fertility Outcomes in Developing Countries," AEA Papers and Proceedings, American Economic Association, vol. 108, pages 358-362, May.
    38. Simone Schaner, 2015. "Do Opposites Detract? Intrahousehold Preference Heterogeneity and Inefficient Strategic Savings," American Economic Journal: Applied Economics, American Economic Association, vol. 7(2), pages 135-174, April.
    39. John Cleland & Kazuyo Machiyama & John B. Casterline, 2020. "Fertility preferences and subsequent childbearing in Africa and Asia: A synthesis of evidence from longitudinal studies in 28 populations," Population Studies, Taylor & Francis Journals, vol. 74(1), pages 1-21, January.
    40. McCarthy, Aine Seitz, 2019. "Intimate partner violence and family planning decisions: Experimental evidence from rural Tanzania," World Development, Elsevier, vol. 114(C), pages 156-174.
    41. Vellore Arthi & James Fenske, 2018. "Polygamy and child mortality: Historical and modern evidence from Nigeria’s Igbo," Review of Economics of the Household, Springer, vol. 16(1), pages 97-141, March.
    42. repec:ajt:wcinch:73328 is not listed on IDEAS
    43. Salvatore Di Falco & Ferdinand M. Vieider, 2018. "Assimilation In The Risk Preferences Of Spouses," Economic Inquiry, Western Economic Association International, vol. 56(3), pages 1809-1816, July.
    44. Oded Galor, 2011. "Unified Growth Theory," Economics Books, Princeton University Press, edition 1, number 9477, December.
    45. Friedman, Willa Helterline, 2018. "Antiretroviral drug access and behavior change," Journal of Development Economics, Elsevier, vol. 135(C), pages 392-411.
    46. Kasey S. Buckles & Daniel M. Hungerman, 2018. "The Incidental Fertility Effects of School Condom Distribution Programs," Journal of Policy Analysis and Management, John Wiley & Sons, Ltd., vol. 37(3), pages 464-492, June.
    47. Wenbo Zou & Travis Lybbert & Stephen Vosti & Souheila Abbeddou, 2020. "Early Childhood Nutrition, Parental Growth Perceptions and Educational Aspirations in Rural Burkina Faso," Journal of Development Studies, Taylor & Francis Journals, vol. 56(4), pages 798-816, April.
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    Cited by:

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    JEL classification:

    • D13 - Microeconomics - - Household Behavior - - - Household Production and Intrahouse Allocation
    • J13 - Labor and Demographic Economics - - Demographic Economics - - - Fertility; Family Planning; Child Care; Children; Youth

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