Abstract
I argue that the United States needs new survey data on intergenerational relationships in light of the dramatic demographic changes in parent-child and couple relationships that were not anticipated when many major family datasets were designed. Increases in nonmarital childbearing, the instability of parents' relationships and high rates of repartnering challenge conventional approaches to data collection on families. Large race-ethnic and socioeconomic differences in the extent of these changes and their impact on intergenerational support may contribute to growing inequality. A new study must collect data on both household relationships and relationships among family members who live apart because most U.S. parents and adult offspring do not co-reside. The survey should obtain information on the timing of family transitions and include multiple cohorts to take account of differences in societal conditions that influence family experiences. A longitudinal design would show how parent-child relationships unfold over time and build on past histories. The paper identifies the dimensions of intergenerational ties that should be measured and explains why existing data cannot address the need for a new study.