Using data from three waves of the National Survey of Families and Households (N=1,963), we examine associations between adolescent family experiences and young adult well-being across a range of indicators, including schooling, substance use, and family-related transitions. We compare children living with both biological parents, but whose parents differ in how often they argue, to children in stepfather and single-mother families, and we assess the extent to which differences can be understood in terms of family income and parenting practices. Findings suggest that parental conflict is associated with children's poorer academic achievement, increased substance use, and early family formation and dissolution. Living in single mother and stepfather families tend to be more strongly associated with our indicators of well-being, although differences between these family types and living with high conflict continuously married parents are often statistically indistinguishable. Income and parenting largely do not account for associations between adolescent family type and later life outcomes. We conclude that while children do better, on average, living with two biological married parents, the advantages of two-parent families are not shared equally by all.Keywords family structure; parental conflict; transition to adulthood; parenting The association between family structure and child well-being is frequently cited: children who grow up with two married parents tend to fare better than others (for reviews see Amato, 2005;McLanahan & Sandefur, 1994;Sigle-Rushton & McLanahan, 2004). Most studies of family structure compare children in single-parent and stepparent families to those living with their married, biological parents, treating these marriages as a homogenous group. A somewhat distinct body of work shows the importance of parental conflict for child outcomes. Children whose parents often argue score worse on measures of academic achievement, behavior problems, psychological well-being, and adult relationship quality; they are also more likely to form families early and outside of marriage (Amato & Sobolewski, 2001;Booth & Edwards, 1990;Davies & Cummings, 1994;Emery, 1982;Furstenberg & Teitler, 1994;Grych & Fincham, 1990;Hanson, 1999;Jekielek, 1998;Morrison & Coiro, * Direct correspondence to Kelly Musick, Department of Policy Analysis and Management, MVR 254, Cornell University, Ithaca, NY 14853; musick@cornell.edu; Phone: 607-255-6067; Fax: 607-255-4071. Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Musick & Bumpass, 1999). Examining variation in conflict ...