American families today are noted for their wide variety of guises. Among the mix are single-parent families, childless-by-choice marriages, nuclear families, multigenerational families, and same-sex couples. Although this diversity has come under the scrutiny of everyone from politicians to the media, family diversity is not a recent development of contemporary culture. While nuclear families with a mother, a father, and children are the presumed historical norm, people have always resided in an assortment of family formations.

Bringing together essays by twenty-one distinguished scholars...