Family Structures

If you asked 30 kids in a classroom to draw their family, you might get 30 different pictures: some with two parents, some with one, some with grandparents in the house, some with two moms or two dads, some with stepbrothers and stepsisters. Sociologists -- scientists who study how people live together in groups -- have a name for this variety: family structure. There is no single 'normal' family; there are patterns that show up again and again across cultures and time.

- The main types of family structures sociologists study - How family structures differ across cultures and history - Vocabulary: nuclear family, extended family, blended family, kinship - Why sociologists say family is defined by function, not just biology

A nuclear family usually means two parents and their children living together. An extended family adds other relatives -- grandparents, aunts, uncles, or cousins -- living in the same household or nearby and sharing daily life. A blended family forms when parents with children from previous relationships combine into one household through marriage or partnership. A single-parent family has one parent raising children, sometimes with support from extended relatives. None of these is 'the' family structure; they are just different, common shapes families take.

In many parts of India and China, multigenerational households -- where grandparents, parents, and children all live under one roof -- have been common for centuries, partly to pool resources and care for elders. Among the Mosuo people in southwestern China, children traditionally grow up in their mother's household with her brothers helping raise them, rather than living with their father. In the United States, the percentage of children living with two married parents dropped from about 85% in 1960 to about 63% by 2020, according to U.S. Census data, as single-parent and blended families became more common.

Sociologists care less about the exact shape of a family and more about what a family does: providing food, shelter, safety, and emotional support, and teaching children the norms of their culture. A single parent working two jobs while a grandmother provides childcare is doing the same essential job as a two-parent nuclear household -- just organized differently. This is why researchers study family function alongside family form.