GENITAL PHASE: "Normal" heterosexuality. According to Freud, heterosexual intercourse should be the goal of psychosexual development (a position that has since been questioned by feminists and queer theorists; see Gender and Sex). At this point in "normal" development, Freud writes, one witnesses "the subordination of all the component sexual instincts under the primacy of the genitals" (Introductory Lectures 16.328). In this way, the individual enters adulthood and ensures the survival of the species. For Freud, a desire for oral or anal pleasure constitutes a fixation on or a regression to an earlier stage in one's psychosexual development.