The changing character of stepfamilies: implications of cohabitation and nonmarital childbearing.

Divorce, nonmarital childbearing, and cohabitation are reshaping family experience in the United States. Because of these changes, our traditional definitions of families decreasingly capture of the social units of interest. We have noted how a significant proportion of officially defined single-parent families actually are two-parent unmarried families.

Redefining single-parent families: cohabitation and changing family reality.

This paper explores the implications, for the measured prevalence and duration of mother-only families, of marked changes in nonmarital fertility, unmarried cohabitation, and homeleaving and re-entry. Throughout, estimates are compared on the basis of marital definitions and definitions including cohabitation. The duration of the first single-parent spell appears to have increased under the marital definition, but declines substantially when cohabitations are taken into account.