Patterns of Singlehood, Cohabitation, and Marriage in Early Adulthood in Relation to Well-being in Established Adulthood.

In a cohort followed from late adolescence until established adulthood, this study examined how singlehood, cohabitation, and marriage are related to well-being at different ages across early adulthood and into established adulthood.Participants ( = 585) from three U.S. sites reported their marital and residential status at ages 18, 23, 28, and 34, when they also reported on physical, psychological, and social indicators of well-being. Findings suggest that being married compared to single earlier in adulthood is related to several indicators of better age 34 well-being. Although single and married participants did not differ on all indicators of well-being, married participants across several ages had less problematic substance use, better health, more economic security, and fewer internalizing and externalizing problems at age 34. Cohabiting participants' well-being was more similar to the well-being of the single than married participants on most indicators (and on all indicators by age 34). Findings did not differ by gender. The findings suggest that despite normative increases in singlehood and cohabitation, the present cohort shows that marriage continued to be associated with well-being at age 34.