Abstract
Fertility desires may not indicate precise plans; nonetheless, they contain important clues for understanding future fertility. On the basis of the dual assertion that fertility desires are (1) meaningful and (2) subject to revision with changing circumstances, this visualization provides a snapshot of young men’s fertility desires using data from the Tsogolo La Thanzi study set in Balaka, Malawi. Scholars typically measure desires by summarizing how many children respondents would like to have (numeric) and when (timing). This visualization adds a third dimension, flexibility, asking how changing circumstances would alter fertility desires, as typically measured. HIV-related concerns reduce most young men’s numeric desires while also accelerating family formation; the only scenario that increases desired fertility for many men is an imbalanced gender ratio in the family. Visualizing flexibility as a dimension of fertility desires clarifies that young men’s stated fertility desires are often tentative and subject to revision.
Keywords
Even though their future families may be far off, young people have ideas about how many children they would like to have in their lives and when they would like to have them. Fertility researchers regularly collect data on young adults’ fertility desires, with the goal of forecasting where trends are headed. Fertility desires may not indicate precise plans; nonetheless, they contain important clues for understanding future fertility (Yeatman, Trinitapoli, and Garver 2020). On the basis of the dual assertion that fertility desires are (1) meaningful and (2) flexible (i.e., subject to change with changing circumstances), this visualization provides a snapshot of young men’s fertility desires using data from the Tsogolo La Thanzi study set in Balaka, Malawi. Most scholarship on fertility desires focuses on women, and the phenomenon of flexibility has been interrogated recently in samples of women from Malawi and Kenya (Mueller et al. 2019; Trinitapoli and Yeatman 2018). But men have fertility desires too, and it may not be reasonable to assume that theirs align with what researchers know from studying women (Frost and Dodoo 2009).
Our visualization focuses on the flexibility of fertility desires, on the basis of responses from 476 childless, unmarried men between ages 15 and 25 in 2009. The mean ideal family size (IFS) is 3.3, and if everything in life goes as these men hope it will, this sample will father 1,562 children in their lifetimes. Men in the sample desire to delay their first birth, most for as many as 5 years.
Following these questions about numeric and timing desires, interviewers asked whether their stated preferences would change or stay the same in response to 18 hypothetical scenarios. On the basis of a vast literature about constraints and supports to fertility, we group the scenarios into three broad categories: economic conditions (orange), family factors (blue), and AIDS-related concerns (red). Figure 1 summarizes the results. Scenarios are arranged from most to least susceptible to change on the basis of the numeric indicator, with arrows showing the direction and proportion who indicated numeric changes (fewer vs. more) and timing shifts (delay vs. acceleration).

A view of young men’s fertility desires, Balaka, Malawi.
HIV-related concerns reduce most young men’s IFS, while also accelerating family formation; at least half say they would want fewer children if they or their partners suspected an HIV infection, but many would have those children sooner than originally desired. The scenario of food scarcity also reduces many men’s IFS, but positive economic changes provoke little change, split evenly between increases and decreases. The only scenario that increases IFS for a sizable proportion of men is an imbalanced gender ratio in the family. Consistent with previous research on gender preferences in sub-Saharan Africa, the desire for both male and female children is strong (Rossi and Rouanet 2015).
Previous research has shown IFS, timing desires, and flexibility to be predictive of future behavior. Visualizing flexibility allows us to see that when young people make statements about the families they want to have in the future, many are articulating a tentative desire or a base preference rather than a fixed goal. They can simultaneously envision scenarios that would alter those desires over the course of their lives and speculate about whether and how those scenarios are relevant to their fertility. To understand how flexible the fertility desires of young adults in other populations truly are, researchers need to ask.
Footnotes
Acknowledgements
This research uses data from Tsogolo La Thanzi, a research project designed by Jenny Trinitapoli and Sara Yeatman and funded by grants R01-HD058366 and R03HD095690 from the National Institute of Child Health and Human Development. We wish to acknowledge the contributions of the outstanding team of interviewers and data staff at Tsogolo La Thanzi.
Funding
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by grants R01-HD058366 and R03HD095690 from the National Institute of Child Health and Human Development.
Ethical Approval
Ethical approval for this study was obtained from National Health Sciences Research Council in Malawi and from Arizona State University, Penn State University, and the University of Chicago in the United States.
Data Availability
Tsogolo La Thanzi data are available to researchers through Data Sharing for Demographic Research.
