Feminist perspectives offer a revolutionary critical lens for studying families and for challenging traditional understandings of sex, gender, sexualities, conceptualizations of families, and individuals' family roles. Feminist thought considers issues of power on individual, relational, familial, institutional, structural, and global levels, as well as the interplay of power across these levels. Praxis (i.e., applying research to promote social justice), reflexivity (i.e., critical questioning of research practices), and the use of a diversity of feminist approaches are distinctive features of feminist thought in family studies. Feminist perspectives expose essentialist binaries (e.g., men/women); critique restrictive gendered roles in families (e.g., the disproportionate amount of women's family labor); question biological determinism as well as the myth of separate private/public spheres; and challenge other notions, including: (1) that families are unmitigated safe havens; (2) that there is one monolithic family; and (3) that one type of family is optimal.