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Urbanization in low and middle-income nations is characterized by economic and demographic shifts largely understood to be beneficial to women’s empowerment. These changes include increased education and wage-labor opportunities, a disruption of traditional patrilocal residence systems, and reductions in spousal age gap and fertility. However, such changes may drive a “violence backlash,” with men increasing intimate partner violence (IPV) in efforts to challenge women’s shifting status. To date, tests of this idea primarily relate to women’s changing economic status, with less known about the demographic correlates of IPV in urbanizing settings. Addressing this, we conducted a cross-sectional study of IPV behavior and attitudes in an urbanizing community in Mwanza, northern Tanzania ( n = 317). Consistent with a violence backlash, IPV was reported more often among women educated at higher levels than their husband, and women earning similar, rather than lower, wages to their husband were more likely to report that he condones IPV. These findings were independent of women’s absolute education and income. Furthermore, less frequent paternal kin contact, and relatively small spousal age gaps, generally understood to boost women’s empowerment, were associated with an increased risk of experiencing IPV. Less frequent paternal kin contact was also associated with an increased likelihood that a husband condones IPV. Contrary to our predictions, relatively lower fertility, generally linked to higher women’s empowerment, did not predict IPV behavior and women with high, rather than low, fertility were more likely to report that their husband condones IPV. Overall, our results support the notion of a violence backlash corresponding to economic changes for women that accompany urbanization. In contrast, demographic changes associated with urbanization have more variable relationships. Drawing on these results, we suggest future research avenues for better understanding the vulnerability of women to IPV in urbanizing settings.

Achieving gender equality fundamentally requires a transfer of power from men to women. Yet data on men's support for women's empowerment (WE) remains scant and limited by reliance on self-report methodologies. Here, we examine men's support for WE as a sexual conflict trait, both via direct surveys (n = 590) and indirectly by asking men's wives (n = 317) to speculate on their husband's views. Data come from a semi-urban community in Mwanza, Tanzania. Consistent with reduced resource competition and increased exposure to relatively egalitarian gender norms, higher socioeconomic status predicted greater support for WE. However, potential demographic indicators of sexual conflict (high fertility, polygyny, large spousal age gap) were largely unrelated to men's support for WE. Contrasting self- and wife-reported measures suggests that men frequently exaggerate their support for women in self-reported attitudes. Discrepancies were especially pronounced among men claiming the highest support for WE, but smallest among men who held a professional occupation and whose wife participated in wage labour, indicating that these factors predict genuine support for WE. We discuss the implications of these results for our understanding of both individual variation and patriarchal gender norms, emphasising the benefits of greater exchange between the evolutionary human sciences and global health research on these themes.

In Tanzania, unmet need for contraception is high, particularly in the postpartum period. Contraceptive counseling during routine antenatal HIV testing could reach 97 percent of pregnant women with much-needed information, but requires an understanding of postpartum contraceptive use and its relationship to antenatal intentions. We conducted a baseline survey of reproductive behavior among 5,284 antenatal clients in Northern Tanzania, followed by an intervention offering contraceptive counseling to half the respondents. A follow-up survey at 6-15 months postpartum examined patterns and determinants of postpartum contraceptive use, assessed their correspondence with antenatal intentions, and evaluated the impact of the intervention. Despite high loss to follow-up, our findings indicate that condoms and hormonal methods had particular and distinct roles in the postpartum period, based on understandings of postpartum fertility. Antenatal intentions were poor predictors of postpartum reproductive behavior. Antenatal counseling had an effect on postpartum contraceptive intentions, but not on use. Different antenatal/contraceptive service integration models should be tested to determine how and when antenatal counseling can be most effective.