Unintended pregnancy often leads to undesirable outcomes for both mothers and children. However, the definition of unintended pregnancy in the sociology of family formation has been restricted to the intentions of mothers. The intentions of fathers—and, with them, the possible role of disagreement about pregnancy intention—remain outside most conceptual frameworks and research programs. This article draws together a number of indicators of unilateral pregnancy in research on contemporary family formation in the United States. Studies of pregnancy intendedness and contraceptive use consistently provide evidence suggesting a significant role for unilateral pregnancy in family formation. Working on the assumption that unilateral pregnancy presents great potential for social dislocation, this article argues for the integration of the concept of unilateral pregnancy into the theoretical framework informing research on family formation.
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