In recent decades, cohabitation has become an increasingly important relationship context for U.S. adults and their children, a union status characterized by high levels of instability. To understand why some cohabiting couples marry but others separate, researchers have drawn on theories emphasizing the benefits of specialization, the persistence of the male breadwinner norm, low income as a source of stress and conflict, and rising economic standards associated with marriage (the marriage bar). Because of conflicting evidence and data constraints, however, important theoretical questions remain. This study uses survival analysis with prospective monthly data from nationally representative panels of the Survey of Income and Program Participation from 1996–2013 to test alternative theories of how money and work affect whether cohabiting couples marry or separate. Analyses indicate that the economic foundations of cohabiting couples’ union transitions do not lie in economic specialization or only men’s ability to be good providers. Instead, results for marriage support marriage bar theory: adjusting for couples’ absolute earnings, increases in wealth and couples’ earnings relative to a standard associated with marriage strongly predict marriage. For dissolution, couples with higher and more equal earnings are significantly less likely to separate. Findings demonstrate that within-couple earnings equality promotes stability, and between-couple inequalities in economic resources are critical in producing inequalities in couples’ relationship outcomes.
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As Becker (1981:14) stated, “Specialization in the allocation of time and in the accumulation of human capital would be extensive in an efficient family if all members were biologically identical; indeed, . . . biological differences probably have weakened the degree of specialization.”
CPS-Outgoing Rotation Group data was obtained from IPUMS-CPS.
SIPP data used in this study are publicly available from the U.S. Census Bureau. Data can be accessed at http://www.census.gov/sipp/.
Estimates are substantively identical when the marriage bar is defined at the census division or national level, but BIC model fit statistics are improved significantly when the marriage bar is defined at the state level.
I exclude states grouped in the SIPP: Maine, Vermont, North Dakota, South Dakota, and Wyoming.
Comparing marriage bar specifications in Table S3 (Online Resource 1) for men’s, women’s, and couples’ earnings ratio shows that increases in earnings below the marriage bar are positively associated with the risk of marriage, although women’s earnings ratio below the marriage bar is smaller in magnitude than couples’ and men’s earnings ratio and not statistically significant (p = .08).
The SIPP does not collect data consistently across waves on the value of assets and debt. Although there are wealth topical modules in select waves of each panel, I rely on consistently available wealth indicators.
This restriction aims to avoid oversampling individuals who are especially prone to union instability, and leads to a reduction from 5,890 cohabiting couples to 5,406. Missing covariate data produces a final analytic sample of 5,303 couples.
Subfamily cohabiting unions are those in which neither partner is the household head.
Avellar, S., & Smock, P. J. (2005). The economic consequences of the dissolution of cohabiting unions. Journal of Marriage and Family, 67, 315–327.
Baughman, R., Dickert-Conlin, S., & Houser, S. (2002). How well can we track cohabitation using the SIPP? A consideration of direct and inferred measures. Demography, 39, 455–465.
Becker, G. S. (1981). A treatise on the family. Cambridge, MA: Harvard University Press.
Becker, G. S., Landes, E. M., & Michael, R. T. (1977). An economic analysis of marital instability. Journal of Political Economy, 85, 1141–1187.
Bertrand, M., Pan, J., & Kamenica, E. (2015). Gender identity and relative income within households. Quarterly Journal of Economics, 130, 571–614.
Bitler, M. P., Belbach, J. B., Hoynes, H. W., & Zavodny, M. (2004). The impact of welfare reform on marriage and divorce. Demography, 41, 213–236.
Bittman, M., England, P., Sayer, L., Folbre, N., & Matheson, G. (2003). When does gender trump money? Bargaining and time in household work. American Journal of Sociology, 109, 186–214.
Blau, F. D. (1998). Trends in the well-being of American women, 1970–1995. Journal of Economic Literature, 36, 112–165.
Brines, J. (1994). Economic dependency, gender, and the division of labor at home. American Journal of Sociology, 100, 652–688.
Brines, J., & Joyner, K. (1999). The ties that bind: Principles of cohesion in cohabitation and marriage. American Sociological Review, 64, 333–355.
Brown, S. L. (2000). Union transitions among cohabitors: The significance of relationship assessments and expectations. Journal of Marriage and Family, 62, 833–846.
Brown, S. L. (2004). Family structure and child well-being: The significance of parental cohabitation. Journal of Marriage and Family, 66, 351–367.
Brown, S. L. (2006). Family structure transitions and adolescent well-being. Demography, 43, 447–461.
Bumpass, L., & Lu, H.-H. (2000). Trends in cohabitation and implications for children’s family contexts in the United States. Population Studies, 54, 29–41.
Bumpass, L. L., & Sweet, J. A. (1989). National estimates of cohabitation. Demography, 26, 615–625.
Burnstein, N. R. (2007). Economic influences on marriage and divorce. Journal of Policy Analysis and Management, 26, 387–429.
Cancian, M., & Meyer, D. R. (2014). Testing the economic independence hypothesis: The effect of an exogenous increase in child support on subsequent marriage and cohabitation. Demography, 51, 857–880.
Carlson, M., McLanahan, S., & England, P. (2004). Union formation in fragile families. Demography, 41, 237–261.
Cherlin, A. (1978). Remarriage as an incomplete institution. American Journal of Sociology, 84, 634–650.
Cherlin, A. J. (2004). The deinstitutionalization of American marriage. Journal of Marriage and Family, 66, 848–861.
Clarkberg, M., Stolzenberg, R. M., & Waite, L. J. (1995). Attitudes, values, and entrance into cohabitational versus marital unions. Social Forces, 74, 609–632.
Coontz, S. (2004). The world historical transformation of marriage. Journal of Marriage and Family, 66, 974–979.
Copen, C. E., Daniels, K., & Mosher, W. D. (2013). First premarital cohabitation in the United States: 2006–2010 National Survey of Family Growth (National Health Statistics Reports, No. 64). Hyattsville, MD: National Center for Health Statistics.
Corcoran, M., Danziger, S. K., Kalil, A., & Seefeldt, K. S. (2000). How welfare reform is affecting women’s work. Annual Review of Sociology, 26, 241–269.
Cotter, D., Hermsen, J. M., & Vanneman, R. (2011). The end of the gender revolution? Gender role attitudes from 1977 to 2008. American Journal of Sociology, 117, 259–289.
DiPrete, T. A., & Buchmann, C. (2006). Gender-specific trends in the value of education and the emerging gender gap in college completion. Demography, 43, 1–24.
Dixon, R. B. (1978). Late marriage and non-marriage as demographic responses: Are they similar? Population Studies, 32, 449–466.
Easterlin, R. A. (1980). Birth and fortune: The effects of generation size on personal welfare. Chicago, IL: University of Chicago Press.
Edin, K., & Kefalas, M. J. (2005). Promises I can keep: Why poor women put motherhood before marriage. Berkeley: University of California Press.
Ellwood, D. T., & Jencks, C. (2004). The uneven spread of single-parent families: What do we know? Where do we look for answers? In K. M. Neckerman (Ed.), Social inequality (pp. 3–77). New York, NY: Russell Sage Foundation.
Esping-Andersen, G., & Billari, F. C. (2015). Re-theorizing family demographics. Population and Development Review, 41, 1–31.
Fine, J. P., & Gray, R. J. (1999). A proportional hazards model for the subdistribution of a competing risk. Journal of the American Statistical Association, 94, 496–509.
Flood, S., King, M., Ruggles, S., & Warren, J. R. (2015). Integrated public use microdata series, Current Population Survey: Version 4.0 [Machine-readable database]. Minneapolis: University of Minnesota.
Gerson, K. (2011). The unfinished revolution: How a new generation is reshaping family, work, and gender in America. New York, NY: Oxford University Press.
Gibson-Davis, C. M., Edin, K., & McLanahan, S. (2005). High hopes, but even higher expectations: The retreat from marriage among low-income couples. Journal of Marriage and Family, 67, 1301–1312.
Goldin, C. (2006). The quiet revolution that transformed women’s employment, education, and family. American Economic Review: Papers & Proceedings, 96, 1–21.
Goldin, C. (2014). A grand gender convergence: Its last chapter. American Economic Review, 104, 1091–1119.
Goldscheider, F., Bernhardt, E., & Lappegård, T. (2015). The gender revolution: A framework for understanding changing family and demographic behavior. Population and Development Review, 41, 207–239.
Goldstein, J. R., & Kenney, C. T. (2001). Marriage delayed or marriage forgone? New cohort forecasts of first marriage for U.S. women. American Sociological Review, 66, 506–519.
Guzzo, K. B., & Furstenberg, F. F. (2007). Multipartnered fertility among American men. Demography, 44, 583–601.
Hardie, J. H., & Lucas, A. (2010). Economic factors and relationship quality among young couples: Comparing cohabitation and marriage. Journal of Marriage and Family, 72, 1141–1154.
Hayford, S. R., & Morgan, S. P. (2008). The quality of retrospective data on cohabitation. Demography, 45, 129–141.
Jacobs, J. A., & Gerson, K. (2004). The time divide. Cambridge, MA: Harvard University Press.
Kalbfleisch, J. D., & Prentice, R. L. (2002). The statistical analysis of failure time data. Hoboken, NJ: John Wiley & Sons.
Kalmijn, M., Loeve, A., & Manting, D. (2007). Income dynamics in couples and the dissolution of marriage and cohabitation. Demography, 44, 159–179.
Kennedy, S., & Bumpass, L. L. (2008). Cohabitation and children’s living arrangements: New estimates from the United States. Demographic Research, 19(article 47), 1663–1692. https://doi.org/10.4054/DemRes.2008.19.47
Kennedy, S., & Fitch, C. A. (2012). Measuring cohabitation and family structure in the United States: Assessing the impact of new data from the Current Population Survey. Demography, 49, 1479–1498.
Killewald, A. (2016). Money, work, and marital stability: Assessing change in the gendered determinants of divorce. American Sociological Review, 81, 696–719.
Killewald, A., & Gough, M. (2013). Does specialization explain marriage penalties and premiums? American Sociological Review, 78, 477–502.
Kuo, J. C., & Raley, R. K. (2016). Diverging patterns of union transition among cohabitors by race/ethnicity and education: Trends and marital intentions in the United States. Demography, 53, 921–935.
Lee, D., & McLanahan, S. (2015). Family structure transitions and child development: Instability, selection, and population heterogeneity. American Sociological Review, 80, 738–763.
Lichter, D. T., Qian, Z., & Mellott, L. M. (2006). Marriage or dissolution? Union transitions among poor cohabiting women. Demography, 43, 223–240.
Lundberg, S., & Pollak, R. A. (2014). Cohabitation and the uneven retreat from marriage in the United States, 1950–2010. In L. P. Boustan, C. Frydman, & R. A. Margo (Eds.), Human capital in history: The American record (pp. 241–272). Chicago, IL: University of Chicago Press.
Manlove, J., Ryan, S., Wildsmith, E., & Franzetta, K. (2010). The relationship context of nonmarital childbearing in the U.S. Demographic Research, 23(article 22), 615–654. https://doi.org/10.4054/DemRes.2010.23.22
Manning, W. D. (2010). Trends in cohabitation: Twenty years of change, 1987–2008 (NCFMR Family Profiles Report No. FP-13-12). Bowling Green, OH: National Center for Family & Marriage Research, Bowling Green State University.
Manning, W. D., & Smock, P. J. (2005). Measuring and modeling cohabitation: New perspectives from qualitative data. Journal of Marriage and Family, 67, 989–1002.
McCubbin, H. I., & Patterson, J. M. (1983). The family stress process: The double ABCX model of adjustment and adaptation. Marriage and Family Review, 6(1–2), 7–37.
McLanahan, S. (2004). Diverging destinies: How children are faring under the second demographic transition. Demography, 41, 607–627.
McLanahan, S., & Percheski, C. (2008). Family structure and the reproduction of inequalities. Annual Review of Sociology, 34, 257–276.
McLanahan, S., Tach, L., & Schneider, D. (2013). The causal effects of father absence. Annual Review of Sociology, 39, 399–427.
Moffitt, R. A., Reville, R., & Winkler, A. E. (1998). Beyond single mothers: Cohabitation and marriage in the AFDC program. Demography, 35, 259–278.
Munsch, C. L. (2015). Her support, his support: Money, masculinity, and marital infidelity. American Sociological Review, 80, 469–495.
Nock, S. L. (1995). Commitment and dependency in marriage. Journal of Marriage and the Family, 57, 503–514.
Nock, S. L. (2001). The marriages of equally dependent spouses. Journal of Family Issues, 22, 755–775.
Oppenheimer, V. K. (1988). A theory of marriage timing. American Journal of Sociology, 94, 563–591.
Oppenheimer, V. K. (1994). Women’s rising employment and the future of the family in industrial societies. Population and Development Review, 20, 293–342.
Oppenheimer, V. K. (2003). Cohabitation and marriage during young men’s career development process. Demography, 40, 127–149.
Osborne, C., & McLanahan, S. (2007). Partnership instability and child well-being. Journal of Marriage and Family, 69, 1065–1083.
Pedulla, D. S., & Thébaud, S. (2015). Can we finish the revolution? Gender, work-family ideals, and institutional constraints. American Sociological Review, 80, 116–139.
Raftery, A. E. (1995). Bayesian model selection in social research. Sociological Methodology, 25, 111–163.
Ribar, D. C. (2015). Why marriage matters for child wellbeing. Future of Children, 25(2), 11–27.
Rindfuss, R. R., Morgan, S. P., & Offutt, K. (1996). Education and the changing age pattern of American fertility: 1963–1989. Demography, 33, 277–290.
Rindfuss, R. R., & Vanden Heuvel, A. (1990). Cohabitation: A precursor to marriage or an alternative to being single? Population and Development Review, 16, 703–726.
Rogers, S. J. (2004). Dollars, dependency, and divorce: Four perspectives on the role of wives’ income. Journal of Marriage and Family, 66, 59–74.
Sanchez, L., Manning, W. D., & Smock, P. J. (1998). Sex-specialized or collaborative mate selection? Union transitions among cohabitors. Social Science Research, 27, 280–304.
Sassler, S., & McNally, J. (2003). Cohabiting couples’ economic circumstances and union transitions: A re-examination using multiple imputation methods. Social Science Research, 32, 553–578.
Sayer, L. C., England, P., Allison, P. D., & Kangas, N. (2011). She left, he left: How employment and satisfaction affect women’s and men’s decisions to leave marriages. American Journal of Sociology, 116, 1982–2018.
Schieman, S., Glavin, P., & Milkie, M. A. (2009). When work interferes with life: Work-nonwork interference and the influence of work-related demands and resources. American Sociological Review, 74, 966–988.
Schneider, D. (2011). Wealth and the marital divide. American Journal of Sociology, 117, 627–667.
Schneider, D. (2012). Gender deviance and household work: The role of occupation. American Journal of Sociology, 117, 1029–1072.
Schwartz, C. R., & Gonalons-Pons, P. (2016). Trends in relative earnings and marital dissolution: Are wives who outearn their husbands still more likely to divorce? RSF: The Russell Sage Foundation Journal of the Social Sciences, 2(4), 218–236.
Smock, P. J. (2000). Cohabitation in the United States: An appraisal of research themes, findings, and implications. Annual Review of Sociology, 26, 1–20.
Smock, P. J., & Manning, W. D. (1997). Cohabiting partners’ economic circumstances and marriage. Demography, 34, 331–341.
Smock, P. J., Manning, W. D., & Porter, M. (2005). “Everything’s there except money”: How money shapes decisions to marry among cohabitors. Journal of Marriage and Family, 67, 680–696.
Sweeney, M. M. (2002). Two decades of family change: The shifting economic foundations of marriage. American Sociological Review, 67, 132–147.
Tach, L., & Edin, K. (2013). The compositional and institutional sources of union dissolution for married and unmarried parents in the United States. Demography, 50, 1789–1818.
Tach, L. M., & Eads, A. (2015). Trends in the economic consequences of marital and cohabitation dissolution in the United States. Demography, 52, 401–432.
Thornton, A., Axinn, W. G., & Xie, Y. (2007). Marriage and cohabitation. Chicago, IL: University of Chicago Press.
Tichenor, V. J. (1999). Status and income as gendered resources: The case of marital power. Journal of Marriage and the Family, 61, 638–650.
Upchurch, D. M., Lillard, L. A., & Panis, C. W. A. (2002). Nonmarital childbearing: Influences of education, marriage, and fertility. Demography, 39, 311–329.
Waite, L. J. (1995). Does marriage matter? Demography, 32, 483–507.
Waite, L. J., & Lehrer, E. L. (2003). The benefits from marriage and religion in the United States: A comparative analysis. Population and Development Review, 29, 255–275.
Watson, T., & McLanahan, S. (2011). Marriage meets the Joneses: Relative income, identity, and marital status. Journal of Human Resources, 46, 482–517.
Weisshaar, K. (2014). Earnings equality and relationship stability for same-sex and heterosexual couples. Social Forces, 93, 93–123.
West, C., & Zimmerman, D. H. (1987). Doing gender. Gender & Society, 1, 125–151.
Willer, R., Rogalin, C. L., Conlon, B., & Wojnowicz, M. T. (2013). Overdoing gender: A test of the masculine overcompensation thesis. American Journal of Sociology, 118, 980–1022.
Williams, K., Sassler, S., & Nicholson, L. M. (2008). For better or for worse? The consequences of marriage and cohabitation for single mothers. Social Forces, 86, 1481–1511.
Wu, Z., & Pollard, M. S. (2000). Economic circumstances and the stability of nonmarital cohabitation. Journal of Family Issues, 21, 303–328.
Yeung, W. J., Linver, M. R., & Brooks-Gunn, J. (2002). How money matters for young children’s development: Parental investment and family processes. Child Development, 73, 1861–1879.
Zelizer, V. A. R. (1997). The social meaning of money. Princeton, NJ: Princeton University Press.
This research received generous support from the Cornell Population Center and the Office of Population Research. I am grateful to Sara McLanahan, Kelly Musick, Viviana Zelizer, and the editors and anonymous reviewers for valuable comments and suggestions.
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Ishizuka, P. The Economic Foundations of Cohabiting Couples’ Union Transitions. Demography 55, 535–557 (2018). https://doi.org/10.1007/s13524-018-0651-1
- Union dissolution